Fremont Magnet Elementary

Elements & Compounds

Standards:

b. all matter is made of atoms, which may combine to form molecules
d. each element is made of one kind of atom. These elements are organized in the Periodic Table by their chemical properties.

1. Atoms & Molecules Review

Last week you learned about atoms and molecules.

Which of these is true?

All atoms are alike
Atoms are made of molecules
All matter is made of atoms

What do scientists use to view atoms?

magnifying glass
electron microscope
gyroscope

When atoms rearrange to make a new product it is a ___

physical change
chemical change

2. What is an element?

You know that atoms are the building blocks for everything. There are over 100 different kinds of atoms. These different kinds of atoms are called ELEMENTS.

An Element is made up of one kind of atom.

For example - Oxygen is made of oxygen atoms; helium is made of helium atoms.

3. What's a periodic table?

The periodic table is a table that shows all the elements grouped by their weight and properties.

Remember - a property tells you what it looks or acts like.

4. Get To Know The Periodic Table

Let's play tic tac toe with the periodic table. Click on Proton Don and choose tutorial and common elements. Play Proton Don and place a marker on each element you click. If you get 3 in the same row or column by the end of the game, you win!

5. Elements Have Families

The periodic table groups elements that have similar properties, like melting point, or how easily they conduct electricity, into columns and rows.

The elements that are similar have the same colored background, they are in the same family.

6. Which Family?

Use your periodic table to find the family these elements belong to -

1. Nickel (Ni)

2. Carbon (C)

3. Chlorine (Cl)

4. Silicon (Si)

5. Sodium (Na)

6. Copper (Cu)

7. Show What You Know

Use your periodic table look at the elements in the last column. How many are there?
These are all in the same family and have a special name. They are called Nobel Gases. Since they are all gases they have a lot in common.

Which do you think they have in common?

do not change shape easily
colorless and invisible
have surface tension

Click here to see a periodic table.

8. What is a compound?

A compound is 2 or more different elements that are combined or put together.

9. How does that work?

Each element has its own symbol of 1 or 2 letters.

	For example - the letter C is the symbol of carbon. The element carbon is made of carbon atoms.
	The letter O is the symbol of oxygen. The element oxygen is made of oxygen atoms.