1. Matter exists in different physical states
LESSON 1.4
Matter exists in different physical states

2. What determines states of matter?
Def: forms in which matter can exist
Ex: solid, liquid, gas
Molecules of a substance do not change, the arrangement of the molecules does change

5. Circle your level of understanding of these concepts:

6. Solids Fixed volume and fixed shape Particles are close together
Particles are attached and cannot move to another location
Particles vibrate in one fixed place

7. Solids
Particles in solids usually have less space between them than liquids
Gas
Liquid
Solid

8. Solids
H₂O is an exception with more space between molecules of ice than between molecules of water
This causes ice to ‘float’

9. Circle your level of understanding of these concepts:

10. Liquids Fixed volume but no fixed shape
Takes on the shape of a container

11. Liquids Particles attract and are close together
Particles are not fixed in one place and can move from place to place

12. Liquids Volume of liquid can be measured
Molecules in a liquid are not tightly attached allowing them to flow

13. Circle your level of understanding of these concepts:

14. Gases
No fixed volume or shape
Takes on shape and volume of container

15. Gases Particles not close together, can move in any direction
Space between particles changes easily

16. Gases
Adding gas to a rigid container does not change the volume, it just causes less space between particles

17. Gases Gas molecules bouncing off one another create pressure
Temperature affects their movement and pressure

18. Circle your level of understanding of these concepts: