We've learned that atoms can be close together or far apart
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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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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


Let's practice... are

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, liquids, and gases have different densities are

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


Let's practice... are

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


Different objects in the same phase can have different densities.

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


Density is also affect by how heavy the atoms that make an object are.

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


Quiz game

QUIZ GAME object are.


1 what is density
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?



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