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# We've learned that atoms can be close together or far apart - PowerPoint PPT Presentation

We've learned that atoms can be close together or far apart. Scientists have a word that tells us how close together something's atoms are. Density means how closely packed together something's atoms are. If something is very dense that means its atoms are very close together.

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## PowerPoint Slideshow about ' We've learned that atoms can be close together or far apart' - brigid

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Presentation Transcript

If something is arevery dense that means its atoms are very close together

If something is arenot very dense this means its atoms are far apart

1) What does density mean?

2) If something is not dense, how far apart are its atoms?

3) If something is very dense, how far apart are its atoms?

Solids are most dense, liquids are medium dense, and gases are the least dense

1) Order the words: liquid, gas, solid from most dense to least dense

You can tell which object is more dense by how far it sinks in water.

Let's practice.... densities.

1) Which object is most dense?

2) Which object is least dense?

2

1

3

5

4

The atoms that make metal are heavier than the atoms that make plastics

### QUIZ GAME object are.

1. What is density? object are.

14. You put 2 objects in the water. Object number 1 floats on the top of the water and object number 2 sinks to the bottom. Which object is more dense?