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Chemistry
RAFT Activities

Pumping Iron

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<Finding the Iron in Iron Fortified Breakfast Cereal

Sure, that fortified cereal sounds great! Our bodies need iron to grow, but no one would eat a bolt or other big chunk of iron to stay healthy... or would they? Iron is iron, and magnets attract iron. Finding iron in iron-rich food is easy (and amazing!)!

Click here to download the pdf instructions.

Image Credit: RAFT.

Tips for Talking Science


When chemicals react, they sometimes produce a color change, a fizzing, or other observable clues. Talk about different ways of produce exciting reactions. (The vinegar and baking soda "volcano" is an old favorite, while Mentos and cola is a new favorite -- and one best done outside!) Or make a batch of red cabbage water indicator and talk about what color changes you think it might produce when mixes with different baking ingredients, fruit juices, or cooking liquids.

Resources
Get Involved in Chemistry!


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World Water Monitoring Day

It's not too late to participate in the World Water Monitoring Day (WWMD) which is an international education and outreach program that builds public awareness and involvement in protecting water resources around the world by engaging citizens to conduct basic monitoring of their local water bodies. While the official day was September 18th, 2009, you're welcome to host an event up to December 31st!


Talking about Science

Talking about the process and nature of science -- be it evolution, physics, or biodiversity -- is not always second nature, so we have enlisted scientist and mom Janet Stemwedel to share her fun and engaging blog with us at Year of Science. In this blog, she masterfully navigates through science conversations with her children, explaining cool science concepts in plain, light and fun ways that readers of all ages will enjoy!

Talking About Science


Friday Sprog Blogging: Elements with Style.

At long last, we review a book to which we have alluded in at least two previous posts.

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The book: The Periodic Table: Elements with Style, written by Adrian Dingle, illustrated by Simon Basher. (Boston: Kingfisher, 2007)

The format:

The book introduces several representative elements from the periodic table. For each element, there's a listing of crucial information like the element's symbol, atomic number, atomic weight, color, standard state, density, melting point, boiling point, and data of discovery. But the real story is the first person introduction to each element's character, tendencies, and common uses. Hydrogen says, "I am the simplest and lightest of all the elements, the most abundant in the universe, and the source of everything in it -- from matter and energy to life." Cesium pipes up, "Soft and golden, I'm way more exciting than gold." Magnesium chirps, "I'm happy to mix in any social gathering of the elements, making friends with anyone." Iron hollers, "I am at the center of everything."

Clearly, there are a lot of strong personalities here.

For all the elements that appear in this book (except hydrogen), the introductions to the elements are preceded by a discussion of the group they run with -- the alkali metals, the halogens, the carbon elements, and so on. The book offers a description for each of the groups in the periodic table, including the lanthanides and actinides and the transactinides (although given their instability, we don't get to meet individuals from the latter group). The group descriptions are a little less gripping than the portraits of the elements in each group, but they do a nice job conveying which groups have elements that seems to copy each other closely and which of these periodic table cliques seem to tolerate more individualism.

Each element also has a portrait, a bold graphic that conveys some visual clue to the element's temperament of common uses.

Of course, the book includes these portraits in periodic table layout, too. And the book includes an index and a glossary.

As a casual read, this is not a book that will leave a kid with exhaustive knowledge about all the chemical elements. However, the "personal information" about these elements comes across as quirky and compelling, and it's hard for the young reader to resist forming some opinions about which elements he or she would like to hang out with.


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Dr. Free-Ride: What of you think about this book?

Elder offspring: I like how it describes the different elements and what kinds of "personalities" they have. Also, the book talks about the elements in groups, and they're the same groups that are in the actual official Periodic Table.

Dr. Free-Ride: (to the younger Free-Ride offspring) And what do you think of this book?

Elder offspring: [The younger Free-Ride offspring] just looks at the pictures.

Dr. Free-Ride: Hey, [the younger Free-Ride offspring] has a big vocabulary and good reading skills!

Younger offspring: I mostly just look at the pictures rather than reading all the words. But I do read the names of the elements. I like Rubidium the best. The pictures really match the personalities of the elements, so you know what they're like.

Dr. Free-Ride: It's actually kind of hard to wrap your head around the idea of what an element is.

Elder offspring: Elements are like the stuff that other things are made out of, right?

Dr. Free-Ride: Yeah, each atom in each molecule is an atom of one of the elements.

Younger offspring: Like water is made of hydrogen and oxygen.

Dr. Free-Ride: Yes. But you can also have substances that are made of just one element, and you can have enough to see it. Like the graphite in your pencil -- that's all carbon.

Elder offspring: A diamond is all carbon, too.

Younger offspring: And the helium in a balloon is all helium?

Elder offspring: Yes.

Dr. Free-Ride: Probably. Might depend on the helium tank. Anyway, does this book make you want to read more about chemistry or about different materials?

Elder offspring: Yes! Do you have any other books for us?

Dr. Free-Ride: Umm, let me get back to you on that. (to the younger Free-Ride offspring) Does it make you want to learn more about chemistry?

Younger offspring: No, I still want to learn why there's lava in the center of the earth.

Elder offspring: It's not called lava when it's in the center of the earth, it's called magma.

Dr. Free-Ride: You know, it's possible to pursue more than one set of questions at a time. Not everything you're curious about has to end up being part of your science fair project.

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