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Compound Formulas!

Lesson for 10-23-12
by

Melissa Stoddart

on 23 October 2012

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Transcript of Compound Formulas!

photo credit Nasa / Goddard Space Flight Center / Reto Stöckli Let's Learn More About Them! Compound Formulas! T-Chart Activity Look at these things and think about whether they
are an element or a compound.

Make a T-Chart with Elements on one side and Compounds on the other. Do this on the next blank RIGHT side in your notebook! Title- Compound Formulas!

Write the things that you think are elements - one the elements side and the things that you think are compounds on the compound side. Matching Card Activity Now, you are going to sort some cards! Each person gets a set. You have to cut them apart. Please, do not lose any.

Try to match the names of the compounds to the
chemical formulas.

Like water matches H2O - the 2 should be a subscript but I can't do that with the Prezi! COMPOUND! A compound is made from two or more different elements that are chemically combined and is NOT separated by physical means into other substances.

(It cannot be PHYSICALLY separated - like cut apart with a knife or anything! It can only be CHEMICALLY separated!) Let's Discuss Are you ready? Check your answers! Check your answers with mine - Mrs. Marshall has it.

Now glue it in.

This goes on the left page.

Did you add this to your Table of Contents?

Add it to your Table of Contents please. Now- You get to show me what you know! You will now get a handout.

First , glue your cards correctly on the handout.

Complete the handout by writing both the chemical symbol and the name of the element found in each compound.

For example, water H=hydrogen; O=oxygen Table Salt Chalk Sand Water Honey Breath in a balloon Are you happy with your t-chart? Now, you try and match the cards! Observe the pictures
again. Hint - it is made of sodium and chlorine Hint - It is made of the shells of ancient animals that were once alive. Hint - Do you remember what sand is made of? YOU KNOW THIS ONE! Hint - honey is a lot like glucose! Hint - You blow air in a balloon to blow it up. After seeing the formulas do you want to revise your T-Chart?

Are you sure? How do you know? Were any of the substances pure elements? TEACH OK No How do you know? TEACH - OK Honey, sand, table salt, etc are not found on the Periodic Table of Elements! All of the substances are made of more than one element! What was the most common element in all of the compounds? TEACH - OK Oxygen! Were any of the elements metals? Use your Periodic Table! TEACH -OK None of the elements listed were on the left side of the stair step on the periodic table. Which element was a metalloid? TEACH -OK Si - silicon Which compound had the most elements? TEACH-OK honey (fructose) If I poured honey on the sand would that be a compound? TEACH-OK No, it would be a mixture. Why would it not be
a compound? The elements would be mixed together but you could physically seperate them. If I take the oxygen out of water, will it still be water? What will it turn into? No, you need hydrogen and oxygen to form water. If it were separated it would be hydrogen gas and oxygen gas.....not liquid water. YAY! Now, you know much more about compounds than you did! I am so proud! Now, let's learn MORE about compound formulas........coming up in the next lesson! It is found along the stair step line
on the periodic table. Bye! Review from yesterday!

What is an element? What is a compound? A compound is a PURE SUBSTANCE that is made
of two or more DIFFERENT elements bonded together. TEACH-OK What is a mixture? What is a molecule? A mixture is a physical combination of two or more different pure substances. They are NOT chemically bonded. TEACH- OK A molecule is two or more atoms bonded together.
They may be the same elements or different elements. The smallest piece of a compound is a molecule. TEACH - OK Is this a model of an element, compound or mixture?

If it is a mixture, is it a mixture of elements?
Or a mixture of compounds? Or a mixture or elements and compounds?

Teach-OK Is this a model of an element, compound or mixture?
If it is a mixture, is it a mixture of elements? Or of compounds?
Or is it a mixture of elements and compounds?
Teach-OK
Is this a model of an element, compound or mixture?
If it is a mixture, is it a mixture of elements? Or of compounds?
Or is it a mixture of elements and compounds?
Teach-OK
Is this a model of an element, compound or mixture?
If it is a mixture, is it a mixture of elements? Or of compounds?
Or is it a mixture of elements and compounds?
Teach-OK
Is this a model of an element, compound or mixture?
If it is a mixture, is it a mixture of elements? Or of compounds?
Or is it a mixture of elements and compounds?
Teach-OK
It is a mixture of compounds and elements BECAUSE.... TEACH OK It is a model of a compound BECAUSE....... TEACH -OK It is a model of an element BECAUSE..... An element is a PURE SUBSTANCE
that can not be made smaller through normal processes. The smallest piece is an atom.
TEACH-OK It is a mixture of compounds
BECAUSE....TEACH-OK Now! On to today's lesson!

Do you have glue, scissors, SNB, Pen/pencil?

Good! Let's Get Started!
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