The Periodic Table Explained

I post insecurely in front of the periodic table display  at the U of Iowa (featuring actual elements).
I pose insecurely in front of the periodic table display at the U of Iowa (featuring actual elements).

A while back a friend asked: what’s the deal with chemists and the periodic table? In a nutshell, the periodic table displays all of the elements in an order that allows chemists to know something about each one at a glance.

The elements are arranged by increasing atomic number–the number of protons (+ charges)–roughly equivalent to increasing weight. They are in rows according to the shell or as chemists would say, according to the quantum numbers. Quantum numbers are the equivalent to an element’s address and tell a lot about the electrons–negative charge cloud around the atom. Most of the time, reactivity is due to electrons and their placement around the atom. Conveniently, mother nature made it simple, as elements gain mass and electrons, they group themselves. The columns on the periodic table belong to elements growing ever larger but with the same arrangement of elections on the outside. This means, they react in similar fashion.

See that row on the right with the neon sign? Those are the noble gasses which don’t easily react with anything. Conversely, on the far left are things like sodium and potassium that react so easily to give elections that the elemental forms must be stored under an oil to keep them from joining up with oxygen. Why can you chose between chlorine and bromine for your hot tub? You’ll find chlorine above bromine on the table. They act much the same but chlorine is lighter.

Metals are on the left side along with hydrogen, the lightest element, and non-metals such as carbon, oxygen, and nitrogen are on the right. Elements in-between are the semi-metals or semiconductors. Radioactive elements, too big to be stable, have their weight in parenthesis.

This mortarboard, made by a clever Central College graduate, shows the system of symbols used for element names. The Cc abbreviation is for “Central College.” The numbers are for the proton number (the smaller number) and the weight of the element, which includes neutrons, heavy without charge.

Elemental mortarboard at Central College graduation.
Elemental mortarboard at Central College graduation.
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I like to hand out periodic tables. If someone gives me a tract I will respond by giving them a table. I have even given periodic tables to children associated with the Westboro Baptist Church. I’ll give you one too. Just ask me. 🙂

There you have it. The periodic table will give up lots about the elements without requiring deep thought. The father of the Periodic Table was Mendeleev, a hairy dude who let his lust get the better of him and my guess is that this is why although he made the most useful tool ever imagined way back in 1869, he never got the Nobel Prize. He did it without knowing anything about the parts of the atom–the protons, neutrons, and electrons–basing it all on how each element reacted. That’s what science is all about, predicting, and what helped science slay the beast of fearful superstition that plagued humans throughout history.

Bison Legacy

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Look how deep the roots grow.

In Natural Attraction, Clementine, posing as naturalist Calvin, travels west and wonders where the bison are. Eventually she finds some, and Buffalo Bill as well. The sad fact was that even in 1871, the bison had been hunted into near oblivion, in part to discourage Native Americans, and to provide entertainment for tourists. The good news is that we now have a Bison Legacy law that protects North America’s largest land mammal.

The Neal Smith Wildlife Refuge is about a half hour from my house. It’s a wonderful day trip where you can view herds of buffalo and elk, walk trails, and visit the information center. We can’t undo the past but we can learn from it and take steps to appreciate the depth and breath of life on Earth.

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Display at the Neal Smith Wildlife Refuge in Prairie City, Iowa
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Do you have what it takes to be a naturalist?
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A friendly volunteer shares a moment with a young visitor.

Then and Now, Big and Small: Poster sessions

In Natural Attraction, Clementine must face crowds of experienced scientific men and make her case for discovering a new species by giving a talk and demonstration. Over a century later, presenting research via a poster is common and even at times, controversial. As with science fair displays, a formal poster session is a great way to accommodate numerous presenters in a short period of time.

Here’s a poster of mine from the 80s. The first thing scientists of today will notice is how big and beautiful it is. Yeah, the 80s were big all over.  No computer generated posters. A real live secretary printed this off and since it isn’t crooked, probably glued it to the poster paper for me. Some of this research is what a man tried to steal (see previous post.)

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A poster session 80s style.

These days, posters, glasses, and hair are much smaller. 10325363_10152128198560665_944410361826256467_n

This week my research students wrapped up another successful semester. Yes, there are moments during research when you wonder a’what ever were we thinking?” with a project. The great thing about research is, you aren’t alone. That whole solitary scientist in lab alone is a myth. We work in groups.  Why did Dr. Frankenstein run into trouble? He didn’t have a lab group!

Here’s my research group and their posters, made via Power Point and a big printer. A little blue tape and they’re up with ease.research 2016

Although analytical chemists are known to improve their technique with age, students this semester remarked on more than one occasion that time isn’t always on your side–the brain shrinks with age. (Were they sending me a subtle message? I was teaching an extra class.) But we did it , and we won’t talk about our struggles. Our posters went up, they look beautiful, and now comes some of the sadness of being a teacher, the end of the year good-byes.

 

 

Female in Lab: throwback Thursday

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Here I am in the in lab in the 80s. The first thing an experienced chemist will see is that I’m not using gloves and don’t have my hair pulled back. I have glasses but not safety glasses with a side shield. These are all considered unsafe lab practice today.

I’m using a syringe to apply molecules to a tiny punch of paper in a technique known as room temperature phosphorescence. After being dried with the heat lamp, the molecules will glow in the dark. I’ll put the paper in the instrument that can be seen far to the left and measure the glow. I studied psychoactive compounds, some  of which are controlled substances now.

No doubt the radio was playing 80s music loudly. I had an office just to the right of the lab and I shared it with people I liked. There’s a lot of waiting in chemistry and we filled the time by doing crossword puzzles. drinking tea and coffee, and playing computer games. The games had no visuals, only text. The best one was similar to  Dungeons and Dragons where you developed an identity and walked around looking for treasure (typing out commands such as “walk forward, pick up object, swing sword” and getting attacked.) You couldn’t just buy software then. Someone wrote the program and put it on the server. We all knew Fortran, haha.

This is my only photo of me in that lab. I did have a few female scientist problems but the department director was a black man, Leo Davis, who recognized subtle harassment and kept it at bay even as I wouldn’t admit any incidents to myself or confess that there was anything at all holding me back or that I was at all different from the majority. To be honest, I was also in the Writer’s Workshop and any trouble was “interesting “as writers like to say.

There were a few problems at first such as the female scientists being relegated to TA-ing all female labs. The thought was that the male students were so unable to control themselves that they would go wild in the presence of the females. After we griped about that enough, we were allowed to TA whatever labs we were best qualified to teach. I once got a complaint that I was too sexy to teach analytical lab. I did like to wear skimpy clothes but always closed toed shoes as chemist must wear.

Perhaps the worst incident was when I submitted my work to be published and a man stole my idea, redid the work, and published it. Fortunately he didn’t know what he was doing (reported the blank for example) and I published my data elsewhere after asking the journal to NOT let him review it.

Even with mild harassment, these were the uncomplicated days of my past, filled with camaraderie. If I didn’t have to make a living, I’d be in graduate school forever.

Everything you need to know about SWF–single winged females

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When one thinks of agriculture, bees and honey rarely come to mind. Yet much of agriculture is dependent on one of nature’s single winged females, bees, to pollinate crops. Honey, exclusively made by female bees, is a valuable commodity.

Nationally, around 130 crops rely on bees to produce the produce. These include almonds, cherries, blueberries, apples, pears, peaches, squash and melons. Over half of the nation’s hives (1.7 or more million colonies) are needed just to pollinate almonds grown in the US. Pollination by bees is estimated to provide 15 billion dollars in revenue annually. Most bees provide this as a free service.

According to the Iowa Honey Producers Association, apples, strawberries, and raspberries in Iowa are 90% dependent on bee pollination and melons, pumpkins, cucumbers, and squash are 80% dependent. Soybeans are 5% dependent and the total value of pollination in Iowa is 92 million dollars. Honey bees are not native to North America. They come to us from Europe and can be considered Italian. Many crops such as blueberries and tomatoes are much more effectively pollinated by native bees. According to biologist Paulina Mena, native bees are specialists and have certain plants that they prefer and more effectively pollinate. For example, tomatoes are more easily pollinated by bees that buzz and produce a dust of pollen.

Not all bees form colonies. The honey bee does and lives in hives containing hundreds of individuals. Bumble bees congregate but only in dozens. The U.S. native bees, and most of the 19,000 bee species, are solitary which means that they are more damaged by habitat fragmentation than the colonizing bees.

Most bees  are females and those you see working most certainly are. The males have one set of chromosomes and come from unfertilized eggs in a process known as parthenogenesis. Females come from fertilized eggs. The queen bee stores sperm and as she ages, she runs out of sperm, and produces more unfertilized eggs–more males. The males don’t work for the hive and eventually, it dies out naturally.

There is a unique Mayan bee species native to Central America that produces honey in  colonies that can last up to 100 years. They are tiny bees, like sweat bees, and the colonies are kept by human families and passed down from generation to generation.

All bees face habitat loss and death from pesticides. In these maps, you can see states where bee populations have been decimated and where pesticides are most used. Iowa is ground zero for both. In places where pollinators have been killed because of pesticides, farmers must hand pollinate. I like to grow pumpkins. A pumpkin needs around 6-7 visits by a pollinator before the flower is properly fertilized. I’ve had years where I’ve gotten no pumpkins because I didn’t hand pollinate. This is not good. Besides being weakened by pesticides, bees tend to avoid plowed fields and suffer when wild flowers and clovers are removed from the environment.

People in the United States are the world’s most enthusiastic honey consumers. Honey is popular in industrial food processing and those little honey bears fly off the shelves in stores. Honey is one thing that Saudi Arabia imports from us. The top honey producing state is North Dakota followed by South Dakota, California, Florida, and Minnesota. Worldwide demand for honey is strong. However, care should be taken when eating honey that is imported. There are concerns that Chinese honey may be dangerous and contaminated.

In Iowa there are over 350 beekeepers owning 10,000 colonies inspected by the state. Overall, there are 30,000-35,000 total colonies of honey bees in Iowa. Some of the colonies weather in California and southern states.  Local honey suppliers include Prairie Roots (pictured), Purely Organic LTD in Fairfield, Noble Bee Honey in South Amama and Ebert Honey in Lynnville. Ebert Honey began in 1980 and now has 700 hives. Ebert bees feed on local flowers. It can be purchased at Hy-Vee, Fareway and Pella Nursery.

Sixteen percent of flowers rely on bee pollination. Steven J. Baskauf of the Department of Biological Sciences at Vanderbilt University observes, “As insects, bees are relatively intelligent and are able to learn how to locate and operate particular species of flowers that are in bloom at a particular time.  They are also relatively strong and are able to push their way into complicated flowers that are not accessible to other insects.”

Bees can’t see red so they mostly pollinate blue and yellow flowers with a place to land such as snapdragons, bee balm, passionflowers, clovers, dandelions, berry blossoms and sunflowers. Don’t be reluctant to plant red flowers. Butterflies love them. But you also have permission to let your dandelions grow.

Bees will transport about 40-70 pounds of pollen per year per hive as they gather nectar. Zipping from flower to flower allows for cross-pollination Bees also collect pollen that is mixed with honey and fed to baby bees. Pollen is a protein rich food while nectar provides the carbs. Honey is produced by the bees from nectar secreted by flowers. Nectar is converted to glucose and fructose thanks to enzymes produced by the bees. It is dried down by summer heat and fanning from the bees’ wings. This drying action creates the buzzing sound associated with beehives. It’s estimated that 4 pounds of nectar will produce a pound of honey. Each hive will produce 120-200 pounds of honey, stored as food for the bees. A bee will visit 100 to over a thousand flowers before her nectar storage area is full. Worker bees, which are all female, can work themselves to death. They live just 35 days at the peek of the summer. Worker bees produce beeswax as well and this is used to make the colony.

According to Phil Ebert of Ebert Honey in Lynnville, “Bees can fly a long way. 5 to 6 miles is not uncommon. However, it’s better if they can find forage close to home. They wear themselves out in a hurry if they have to fly long distances. When we are placing bees we try to locate a visible floral source within a mile of the bee location.”

Besides being an eco-friendly locally produced sweetener, honey makes a valuable and accepted home remedy. It contains loads of natural amino acids, antibacterial compounds, and micronutrients. It can be used as a cough syrup and mild burn remedy. It might be useful as a laxative and weight loss product. It is an effective antibacterial agent against sinusitis. It has been suggested as a hangover cure. It can even slow bacteria that cause dental plaque.

However, honey should not be given to babies under one year due to their immature digestive tracts. It contains botulism spores found in soil and dust that can cause a serious disease. (Honey is not the only source of these spores.) Keep in mind that it is still a sweetener and should be consumed in moderation.

Besides making useful materials and providing valuable services for humans, bees provide fascinating study for scientists. Most of a hive consists of worker bees that gather nectar and pollen for the hive and in the process pollinate flowers and crops. Bees in general are not aggressive except when they feel the hive is in danger. Some bees do have aggressive personalities while others are more laid back. Bees are known for having “hive intelligence” aka “swarm intelligence” or being “self organizing systems”. Like ants, there are no managers and nobody is in charge. As a group they function as an intelligent being and make better decisions than the individuals.

With an average of 50,000 bees to a colony, they work on consensus building. Thomas Seeley, a biologist at Cornell University has studied the bee decision-making process and now even uses this process at his department at work. Bees seek out diverse opinions, run them past the hive and then narrow choices.

Bees in the United States and other spots in the world have been disappearing. Bees do not return to the hive. Only 30% of hives make it through the winter. This phenomenon is known as Colony Collapse Disorder or CCD. It is thought to be due to a group of factors including pathogenic microbes, stress, mites which carry viruses, pesticides, poor quality nutrients, over-work and inbreeding of domestic bees.

According to Catherine Zentile of the Cavendish Laboratory at Cambridge, in Great Britain “the biggest impact has been availability of food and drink, in particular the continuity of supplies throughout the colony cycle. The UK has lost 98% of its flower-rich grasslands and this has been devastating for …bees.” She suggests that gardeners set out a pot of sage rosemary and lavender to help the bees out.

Has CCD hit locally? Phil Ebert says, “Whether or not I am having a problem with CCD depends on how you define it. I would say no but our number one problem is keeping the bees alive. My number two problem is finding productive places to put them. There isn’t a lot of bee forage out there. Our biggest problem is with Varroa mites. When they get bad enough, the colony crashes. Some die in the box but most fly out and disappear. There are four main stress factors that affect bees—parasites, viruses, insecticides and poor nutrition. Put all of those in a box and shake them up and you have big trouble. One of the results of these stress factors is reduced queen viability. The question used to be, ‘How many years will a queen last?’ Now, a lot of them don’t last the season. I love beekeeping but it’s a scary way to make a living.”

The Agricultural Research Service has some tips on how to help your local bee. “ The best action you can take to benefit honey bees is to not use pesticides indiscriminately, especially not to use pesticides at mid-day when honey bees are most likely to be out foraging for nectar.”

“In addition, you can plant and encourage the planting of good nectar sources such as red clover, foxglove, bee balm, and joe-pye weed. For more information, see www.nappc.org.”

Currently, the plight of the bee is more of a sorrow than a crisis. There are still enough bees and enough honey, although growing demand and the cost of fuel for transportation is raising prices.

Honey and beeswax are produced without killing anything. In fact, pollen and nectar collection results in the spreading of life. For this reason, bees and honey are considered sacred symbols in many cultures. Now that I understand the importance of bees I’m planning to add a few more bee friendly flowers and vegetables to my garden.

Thank you to Phil Ebert of Ebert Honey  and Paulina Mena of Central College for insightful comments and information. Thanks also to Steven Baskauf of Vanderbilt for permission to use his quote from his website.

 

Tulips in Pella

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Tuttle cabin and tulips.

 

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Sunken Gardens tulips:Pink/Purple/White Mix w/ Yellow Fritillaria

It’s thought that their name is a botched European translation of the Persian world for turban.They were first written about in Turkey and a religious symbol of paradise on Earth in the Ottoman Empire. They were later popularized in the Netherlands and reworked into a reminder of the brevity of life since each blossom lasts a week or less. It’s nearly Tulip Time in Pella so I did a little library research on tulips. Or tried to.

There haven’t been many studies on the chemical properties of tulips. They contain anti-fungal latex-like chemicals called tuliposides and tulipalins that may cause allergic response, especially dermatitis in some people. The bulbs also contain calcium oxalate which is irritating to the skin. Several of the tulipalins are toxic to dogs, cats, and horses. However, some people use the petals in cooking to give a mild onion flavor.

It’s best to plant tulips in the fall. Despite their chemicals, they tend to rot and fall is usually drier than spring. They like cold winters and dry summers.They need the pattern of cold in order to break dormancy and begin to grow. Requiring a specific type of condition in order to sprout is known as stratification.This is a defense mechanism that prevents seeds from sprouting when environmental conditions are unfavorable. It’s terribly complex, with different proteins being produced and protein levels rising and falling. You thought seeds were just sleeping? Not really. They are experiencing life changes.

To keep tabs on Pella’s tulips and if they are blooming, click here for a map of each tulip bed in town.photo-170

 

The Sunny Side of Dandelions

Admit it. When you were young at heart, you loved dandelions. You loved their cheery yellowness. You loved blowing their seeds and making a wish. I loved them then and still do. Just recently, my grandson brought me my first grandmotherly bouquet of dandelions,his face shining with pride. I never have understood why they are a weed, except that lots went wrong during the Victorian era and green lawns with servants to pull the weeds became a status symbol here in the United States. Dandelions are edible and healthy.

Dandelions contain  inositols–chemicals with wide ranging health effects such as controlling high blood pressure, polycystic ovaries, psoriasis, and high cholesterol.Other chemicals in dandelions can help bile production and blood glucose regulation.Dandelions can prevent liver damage.  For a list, along with some experiments that didn’t yield results, go here. However, be careful where you get your dandelions. Avoid those near roads and factories  as they take up pollution. 

The root can be made into a trendy coffee-like beverage. The French make dandelions into soup. They are packed with potassium, calcium, Vitamin A, and Vitamin C. The only worry might be that you could get heartburn from them.

Dandelion roots break up hard soil. There is no reason to spray them and your family with poison. Enjoy them. Put them in salad. Boil the leaves. Make soup.And when you see them, think happy thoughts. You might even make a wish.

goatsbeardThanks to Josh Meier for the use of this photo. View his website here. There’s a secret about this photo. Can you spot it?

Theater Royal Manager’s Handbook: 1795

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I was excited to get my hands on a theater manager’s handbook from Theater Royal on Drury Lane. The manager at the time was Richard Brinkley Sheridan known for writing School for Scandal. In the cover of the book is some handwriting, Dora Jordan’s perhaps–it matches hers, and the notation that there were six plays and six handbooks.

Mrs. Jordan as Hippolyta
A caricature of Dora Jordan from The Manager’s Book at the Theater Royal, Drury Lane, printed by R. Butters. Playing a man allowed audiences to see her lovely legs and also let her wear her hair naturally during the time of high hair and tight corkscrews. This gave people a lot to gossip about. Compare her shoes and hat with those of an actual man below. Clever costuming, is it not? Since the players owned their costumes, this cleverness can be attributed to the actress herself. It was also somewhat expected.

 

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Cast list and first page. The long s indicates this was printed before 1800.

 

Above is a cast list and the first page of the play “She Would and She Would Not.” Note the long s, showing that this was pre 1800.

Mr Lewis
Mr. Lewis wasn’t as famous as Mrs. Jordan. As best I can tell, like Mrs. Jordan, he’d previously worked for Tate Wilkinson in the Yorkshire circuit. The play is The Suspicious Husband
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After two hundred and twenty one years, the cover is not in great shape

I’d be glad to answer further questions about this book for all who are curious about its history.

Those who know me know that I love live theater, especially old  comedies. I like live theater so much, I don’t even care if it’s bad. Natural Attraction includes some bad theater and a traveling cast of “actors” as was common in the days before movies and television.

 

Wolves and Deer is a novel about Dora Jordan herself. If you’re a theater fan, be sure to check it out.

Pella’s Tuttle Cabin

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Tuttle cabin 1843

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Tuttle relations sit in front of the Tuttle cabin in Pella in May.

 

Have you ever wanted to see an authentic log cabin? There’s one in my hometown of Pella, Iowa.  It’s Pella’s oldest known structure and was built by Thomas and Nancy Tuttle in 1843. At the time, the land was bordered on the north by timber. The Tuttles split their own rails, dug a well, and made their home on the present site of Pella. They later sold their home and small farm to the Dutch settlers, who paid in gold. The town of Pella grew around the little cabin, which still stands today just to the east of Lincoln School and to the south of Sunken Gardens Park. It was an artist’s studio for many years but was sold to the Pella Historic Trust and was renovated.

Believe it or not, my husband’s family is related to the Pella Tuttles via Simon Tuttle who was born in Northamptonshire, England in 1565.  The Pella Tuttles are descended from John Tuttle who was born in Northamptonshire, England in 1596.My family is from John’s brother, William Tuttle, who was born in Northamptonshire, England in 1607. The brothers, along with a third brother, came to the US together  in 1635.  Some time after their arrival in Boston they settled in New Haven, CT before heading west to Iowa.

IMG_2032Tom and Nancy Tuttle–portrayed by Tuttle decedents–relax in front of the cabin during Pella’s Tulip Time 2017.

The cabin is located just around the corner from Sunken Gardens Park at 608 Lincoln St. in Pella.