Unit 1: Matter and The Mole

Question 0

Chemical Properties

Answer 0

Those that can be observed only when there is a change in the COMPOSITION of the substance

Question 1

Physical Properties

Answer 1

What can be observed without changing its original state.

Question 2

Physical Change

Answer 2

A change in matter that DOES NOT involve a change in the chemical identity of individual substances

Question 3

Boiling Point

Answer 3

Physical

Question 4

Freezing Point

Answer 4

Physical

Question 5

Melting Point

Answer 5

Physical

Question 6

Evaporating

Answer 6

Physical

Question 7

Dissolving/Solubility

Answer 7

Physical

Question 8

Crystallizing

Answer 8

Physical

Question 9

Mole/Avogardo’s number

Answer 9

Number of Carbon atoms in exactly 12 grams of Carbon 12

6.022XE23

Question 10

Representative Particles

Answer 10

Smallest piece of a substance

Question 11

Chemistry

Answer 11

The science that investigated and explains the structure and properties of matter.
Composition, properties, and the changes

Question 12

Scientific Method

Answer 12

Systematic approach to answer a question or study a situation

Question 13

Hypothesis

Answer 13

A possible explanation for what has been observed.

Question 14

Experiment

Answer 14

A set of controlled observations that test a hypothesis

Question 15

Independent Variable

Answer 15

The variable that is changed by the experimenter

Question 16

Dependent Variable

Answer 16

The changes that occur from the independent variable

Question 17

Theory

Answer 17

A thoroughly tested hypothesis that can NEVER be proven and examine why things behave a certain way.

Question 18

Scientific Law

Answer 18

Describes a relationship in nature that is supported by many experiments an for which no exception has been found.

Question 19

Matter

Answer 19

Anything that takes up space and has mass.

Question 20

Mass

Answer 20

Is the measure of the amount of matters that an object contains.

Question 21

Mixture

Answer 21

Something that has a variable composition.

Question 22

Heterogenous Mixture

Answer 22

A type of mixture that is not uniform/similar

Question 23

Homogenous Mixture (Solution)

Answer 23

A type of moisture where matter is uniform/similar throughout

Question 24

Pure substances

Answer 24

Either elements or compounds

Question 25

Elements

Answer 25

Substances that CANNOT be broken down into other substances chemically or physically

Question 26

Compound

Answer 26

Substances made of two or more elements combined chemically.

Question 27

Density

Answer 27

The amount of matter contained in a unit of volume

Question 28

Intrinsic Property

Answer 28

Independent of the amount of matter in a sample (Density)

Question 29

Extrinsic Property

Answer 29

Change depending on the amount of matter in a sample. (Mass and Volume)