1. How do hot air balloons work?

2. Intro to Matter

3. Matter- anything with mass and volume
Mass- how much matter (stuff) is in an object

5. Mass vs. Weight Weight- measure of gravitational force
Objects with greater mass have a greater gravitational force so they weigh more
Weight can change depending on location
Mass stays the same
Mass vs. Weight Gizmo

6. Volume Volume- how much space something takes up
Regular solids- use math formulas (example- L x W x H)
Liquids- use graduated cylinder
Gas- volume of the container

7. Irregular solids- use water displacement
Sketch this!

8. Density How much mass is in a specific space
How heavy something is compared to its size
Density of a substance is the same no matter how much of the substance you have

10. Examples D= ? M= 80 g V= 2 cm3 D= 20 g/mL M= 100 g V= ?
D= 4 g/cm3 M= ? V= 15 cm3

13. Properties of Matter

14. Physical Properties
Characteristics that can be observed and measured without changing the identity of a substance
Use your 5 senses
Describe the substance

15. Common physical properties
Density
Electrical conductivity- how electrical current moves through a substance
Solubility- ability to dissolve in another substance
Thermal conductivity- how well it transfers heat

16. Malleability- capable of being shaped
Color
Luster- how shiny it is
Magnetic attraction
Melting point
Boiling point

17. Identified by changes they produce
Chemical properties
Describe a substance’s ability to change into another substance with different properties
Identified by changes they produce

18. Common chemical properties
Flammability- ability to burn
Reactivity with other substances ex: iron and oxygen form rust

19. Physical & Chemical Properties (Make 1 for each)
Definition
Examples (at least 3)
Picture
Explain your picture using complete sentences

20. Changes in mater

21. Physical Changes
Changes in matter that do not change the identity of the matter
Can usually be undone

22. Signs of a physical change
Change in size, shape, state, sometimes color
Dissolving, mixing, crushing, bending

23. Chemical Changes
Changes in matter that change the identity of the substance. A substance changes into a different substance
Can’t be undone

24. Signs of a chemical Change
Fizzing/foaming
Color change (sometimes)
Heat, sound, odor, or light produced

25. Examples Is it physical or chemical? Breaking a pencil in half
Campfire
Tearing paper
Mixing kool-aid
Rusty nail
Ice melting
Digesting food
Spoiled milk