Unit 2

Question 1

What is matter

Answer 1

Anything that occupies space and Has mass

Question 2

Physical change

Answer 2

The appearance of the substance changes

Question 3

Chemical change

Answer 3

The substance obtains a new identity

Question 4

Law of conservation of mass

Answer 4

Mass reactants=mass of products

Question 5

Element

Answer 5

Simplest form of matter

Question 6

Compound

Answer 6

Two or more elements combined chemically

Question 7

Mixture

Answer 7

Two or more pure substances combined physically

Question 8

Heterogeneous mixture

Answer 8

The components do not blend

Question 9

Homogeneous mixture

Answer 9

Components blend into one substance

Question 10

Filtration

Answer 10

Separate undissolved solid from liquid

Question 11

Crystallization

Answer 11

Undissolved solid from liquid by creating crystals

Question 12

Distillation

Answer 12

Two Mixed liquids based on boiling point differences

Question 13

Decanting

Answer 13

Two unmixed liquids

Question 14

Centrifugation

Answer 14

Separation of particles from a solution

Question 15

Atom

Answer 15

Smallest particle of an element that has its properties

Question 16

Atoms are made up of smaller particles known as

Answer 16

Subatomic particles