Chapter 8 Changes In Matter

Question 1

Product

Answer 1

A new substance resulting from a chemical change

Question 2

Chemical Reaction

Answer 2

A change in or reaction that creates a new kind matter with different properties from the original matter

Question 3

Reactivity

Answer 3

The ability of elements to take part in chemical reactions

Question 4

Precipitate

Answer 4

The solid product of a chemical reaction in a solution

Question 5

Metal

Answer 5

A substance that conducts heat and electricity

Question 6

Conductivity

Answer 6

The degree to which heat or electricity flows through a substance

Question 7

Insulator

Answer 7

Something that resists to the flow of energy ,such as heat ,electricity ,or sound

Question 8

Superconductor

Answer 8

A material that loses all resistance to electrical flow at extreme low temperatures

Question 9

Malleable

Answer 9

Capable of being rolled or pounded into flat sheets

Question 10

Ductile

Answer 10

Capable of being drawn into wire or thread

Question 11

Corrosion

Answer 11

The gradual weakening and wearing away of something usually due to a chemical reaction

Question 12

Alloy

Answer 12

A mixture of two or more elements, usually metals

Question 13

Salt

Answer 13

A white substance that is found in sea water and in earth

Question 14

Acid

Answer 14

A substance that tastes sour , sharp or biting

Question 15

Indicator

Answer 15

A person or thing that indicates

Question 16

Base

Answer 16

A compound that reacts with an acid to form a salt

Question 17

Neutralization Reaction

Answer 17

The reaction that occurs when and acid and a base react to form water and salt

Question 18

Acidity

Answer 18

The strength of an acidic solution

Question 19

Alkalinity

Answer 19

The strength of a base solution

Question 20

PH Scale

Answer 20

The scale that measures the amount of acid or base solution

Question 21

Reactant

Answer 21

An original substance at the beginning of a chemical reaction