1. States of Matter
Review
Quiz

2. States of Matter
Solids, liquids and gases are the three states of matter. All matter is made from small particles.
These particles are called atoms and molecules.
Freeze your way into solids!

3. Solids Solids have a definite shape and volume.
The particles of a solid are arranged in a tight, regular pattern, and move very little.
Particles are so close to one another that they only vibrate.
Cannot be compressed and can only be broken
Flow into liquids!

4. Types of Solids Amorphous Crystalline Solids that are made of crystals
NOT arranged in a particular pattern
DOES NOT melt at specific temperatures. It just becomes softer and changes into other substances.
Examples: plastics, rubber, glass
Solids that are made of crystals
Regular, repeating pattern
Melts at a specific temperature
Examples: salt, sugar, snow

5. Brain Break

6. Freeze your way into solids!
Liquids
Liquids take on the shape of the container they are in– no definite shape.
Liquids have a definite volume
Particles of a liquid move freely around one another
Fluid: “a substance that flows”
Bubble into gases!
Freeze your way into solids!

7. Brain Break
Marbles in hand, need pictures of flask and graduated cylinder

8. Properties of Liquids
Surface tension: result of an inward pull among the molecules of a liquid that brings the molecules on the surface closer together
Bill Nye video, how many drops on a penny, jar with stocking netting

9. Properties of Liquids Viscosity: a liquid’s resistance to flow
HIGH viscosity: flows slowly
LOW viscosity: flows quickly

10. Your turn!
Low viscosity
High viscosity

11. Gas
Molecules are widely separated, move around freely, and move at high speeds.
Gases do not have a definite shape
Gases also do not have a definite volume because they can be compressed (squashed into a smaller volume).
Flow into liquids!

12. Question 1
How many states of matter are there?
One
Two
Three

13. Question 2
Atoms in a liquid are not farther apart than the atoms in a gas.
True
False
Carefully read the question!

14. Question 3
Which has the least energetic molecules?
Solid
Liquid
Gas

15. There are three different states of matter: solid, liquid, and gas.
CORRECT
There are three different states of matter: solid, liquid, and gas.

16. Correct Again!!
Atoms in a gas are actually farther apart than the atoms in a liquid. Gases are the least dense and have atoms that are the most spread out.

17. Solids have the least energetic molecules.
Geeze, you are extremely smart!!
Solids have the least energetic molecules.

18. You are Finished! Good Job!