vocab 2.1

Question 1

The minimum amount of energy required to initiate a chemical
Reaction: written as Ea and measured in kilojoules

Answer 1

Activation energy

Question 2

The forces that hold atoms together, these may be ionic, metallic.

Answer 2

Chemical Bond

Question 3

A chemical reaction; a process that changes substances into new
Substances (related word; chemical reaction)

Answer 3

Chemical change

Question 4

A characteristic of a substance that is measurable or observable
During a chemical reaction; includes pH, heat of combustion,
Reactivity, ect.

Answer 4

chemical property

Question 5

A fundamental principle of science stating that mass cannot be created
Orr destroyed in a closed system through ordinary chemical or physical
Means.

Answer 5

Law of conversation of mass

Question 6

A change in matter that does not affect its chemical
Composition

Answer 6

Physical change

Question 7

a characteristic that can be observed (intensive), such as texture, color, odor, melting point, boiling point, density, or measured (extensive) such as mass, length, volume, that is used to describe matter and can be observed or measured without changing its composition

Answer 7

Physical property

Question 8

Solid particles that have been separated from a solution

Answer 8

Precipitate

Question 9

The substances that are formed during a chemical reaction
; in a chemical reaction the arrows point toward the product

Answer 9

Product

Question 10

the substances present before a chemical reaction occurs; in a chemical reaction the arrow usually points away from the reactant

Answer 10

Reactant

Question 11

A substance that has the ability to be dissolved by a solvent to create a solution

Answer 11

Solute

Question 12

a mixture in which a solid and a liquid or two liquids are mixed so evenly, that it is not possible to see the separate particles

Answer 12

Solution

Question 13

a substance that has the ability to dissolve a solute when forming a solution

Answer 13

Solvent