Chapter 5

Question 1

What is matter

Answer 1

Anything with mass and volume

Question 2

What is the difference between mass and weight

Answer 2

Mass is amount of matter that an object has while weight is the graviton all pull on the object

Weight varies but mass doesn’t

Question 3

What is volume

Answer 3

Amount of space an object fills

Question 4

What are pure substance

Answer 4

Matter with only one type of particles

Question 5

What are pure substances further classified as

Answer 5

Elements and compounds

Question 6

What is a mixture

Answer 6

Contains 2 or more pure substances

Question 7

What is an element

Answer 7

Basic building blocks of matter
Is a pure substance that cannot be further simplified
Only one kind of particles

Question 8

Why is a compound

Answer 8

Pure substance with 2 or more elements
Elements in definite proportion and can’t be separated physically
Only one kind of particle but each particle has 2 or more elements chemically joined

Question 9

What is a homogenous mixture

Answer 9

Made of substances that are evenly and microscopically mixed together
Particles separate but can’t be distinguished

Question 10

What are heterogenous mixtures

Answer 10

A mixture that is not uniform

Large visible clumps

Question 11

What is chemistry

Answer 11

Study of matter

Question 12

What are alloys

Answer 12

Homogenous mixtures of solids

Question 13

Why are physical properties of matter

Answer 13

You can observe with your senses , measure or calculate

Question 14

What are some physical properties

Answer 14

Color 
Ductility 
Malleability 
Density 
Melting point 
Boiling point 
Solubility 
Conductivity

Question 15

What is a chemical property

Answer 15

Describes the behavior of a substance as it changes into a new substance

Question 16

What are some common chemical properties

Answer 16

Flammability
Corrosion
Reactivity

Question 17

What are the 3 states of matter

Answer 17

Solid
Liquid
Gas

Question 18

What is the difference between a chemical and a physical change

Answer 18

Physical is reversible while chemical is irreversible

In chemical a new substance is formed with new properties while in physical only the state of matter changes

Question 19

What are some examples of a physical change

Answer 19

Boiling water
When a cream is whipped
Sugar dissolving in tea

Question 20

What are some examples of chemical changes

Answer 20

Gas burns to create carbon dioxide, heat and water

Sunlight causes body to make vitamin D

Question 21

What is the kinetic molecular theory

Answer 21

Idea that matter is made from moving invisible particles
All matter is made of particles
Particles are in constant motion
the more energy particles have , the faster they move
different substances have different particles
The attraction between particles decreases with an increase in motion

Question 22

Explains the particles in a solid

Answer 22

particles are locked in fixed position .

definite shape and volume

Question 23

explains the particles in a liquid

Answer 23

particles of matter have more energy than when they were solid
they can now slide past each other