1. 13. Law of conservation of mass
Matter
Take out some note cards, a pencil, and your note card holder
Write the following terms on one note card each:
Take a textbook from the table and read from pages 164 to 190
As you read, create flash cards on the vocabulary terms
REMEMBER TO FOLLOW THE “GOOD NOTE-TAKING GUIDE” ON THE BOARD
1. Matter (199)
2. Volume
3. Solid
4. Liquid
5. Gas
6. Physical property
7. Mass
8. Density
9. Solubility
10. Chemical property
11. Physical change
12. Chemical change
13. Law of conservation of mass

2. 1. Matter Anything that has mass and takes up space Made of atoms
Types of energy, such as heat, sound and electricity are NOT matter
Forces, such as magnetism and gravity, as also NOT forms of matter

3. 3. Solid State of matter with a definite shape and volume
Do not change shape or volume regardless of whether they are inside or outside a container
Particles are close together
Strong attractive forces between particles
Particles vibrate in all directions
Particles are low energy

4. 4. Liquid
State of matter with a definite volume but not a definite shape
Takes the shape of its container
Particles close together
Weaker attractive forces between particles than in solids
Particles free to move past neighboring particles
Particles are medium energy

5. 5. Gas A state of matter without a definite shape or a definite volume
If the container is not closed, gas spreads out of the container
Particles very far apart
Very weak attractive forces between particles
Particles move freely
Particles are high energy

6. Attractive force (weak/strong)?
14. States of Matter
Shape
Volume
Energy
Solid
Liquid
Gas
Attractive force (weak/strong)?
Distance of Particles
Particle movement?
Solid
Liquid
Gas

7. Attractive force (weak/strong)?
14. States of Matter
Shape
Volume
Energy
Solid
Definite shape
Definite volume
 Low energy
Liquid
 No definite shape
Definite volume 
 Medium energy
Gas
 No shape
No definite volume 
 High energy
Attractive force (weak/strong)?
Distance of Particles
Particle movement?
Solid
 Strong
 Close/compacted
Little movement/vibrates 
Liquid
 Somewhat strong
 Close/spread out
 Moves freely
Gas
Weak 
Far away from each other 
 Moves quickly

8. 6. Physical property
Any characteristic of matter that you can observe without changing the identity of the substances that make it up
Ex. State of matter (solid/liquid/gas), temperature, size of object

9. 7. Mass The amount of matter in an object Not the same as weight
Weight takes into account gravitational effect
Mass of an object is the same everywhere (weight changes)
Depends on the size of the sample
To measure mass, you can use a balance

10. 2. Volume The amount of space a sample of matter occupies
Depends on the size of the sample
Ex. The volume of a rectangular shaped solid is length x width x height
Volume of a liquid is measured using a graduated cylinder

11. 8. Density The mass per unit volume of a substance
Does not depend on the size or amount of the sample
Useful when identifying unknown substances because it is constant for a given substance
Ex. A rock is more dense than a ball of cotton even if they’re the same size because the rock is heavier
Density = mass/volume

12. 9. Solubility The ability of one substance to dissolve in another
Size-independent
Ex. Salt is much more soluble in water than sand is
When something dissolves in a substance, a physical change occurs, but the chemical properties stay the same

13. 10. Chemical property
The ability or inability of a substance to combine with or change into one or more new substances
Characteristic of matter that you observe as it reacts with or changes into a different substance
Ex. Some metals react with oxygen in the air to turn brown (rust)
Flammability (how hard or easy an object is to catch on fire) is another example

14. 11. Physical change
A change in the size, shape, form or state of matter that does not change the matter’s identity
Chemical properties stay the same
Ex. Dissolving, melting, boiling
A physical change can cause a change in the state of matter (solid to liquid, etc.)
Do not change the mass of the substance

15. 12. Chemical Change
A change in matter in which the substances that make up the matter change into other substances with different chemical and physical properties
A.k.a. chemical reaction
A new substance is produced
The only sure sign of a chemical change is the formation of a new substance

16. 13. Law of conservation of mass
The total mass before a chemical reaction is the same as the total mass after the chemical reaction
Mass is conserved during a physical change