Introduction to Chemistry Review

Question 1

An increase in temperature...

Accepted Answer

is an endothermic reaction

Question 2

A property describes action while a change describes potential.

Accepted Answer

False

Question 3

What is the 4th step of the scientific method?

Accepted Answer

Perform an Experiment

Question 4

Substances in a mixture keep their own properties.

Accepted Answer

True

Question 5

Magnesium would be an example of...

Accepted Answer

an element

Question 6

Solubility

Accepted Answer

physical property

Question 7

Which type of property is magnetic attraction?

Accepted Answer

physical

Question 8

When butter is melted, what kind of change occurs?

Accepted Answer

physical that absorbs energy

Question 9

Which of these is not a chemical change?

Accepted Answer

food color dissolving in water

Question 10

A collection of chemically combined elements

Accepted Answer

Compound

Question 11

Which chemical property describes how it interacts with other substances?

Accepted Answer

inactivity, reactivity

Question 12

Glass breaking

Accepted Answer

physical change

Question 13

When elements combine to form compounds their properties do not change.

Accepted Answer

False

Question 14

An exothermic reaction...

Accepted Answer

decreases in energy

Question 15

Bleaching your hair

Accepted Answer

chemical change

Question 16

Which of these is not an importance of chemistry?

Accepted Answer

study the universe

Question 17

What kind of observation includes numbers?

Accepted Answer

quantative

Question 18

Which of these is an example of compound?

Accepted Answer

glucose

Question 19

Pure substances...

Accepted Answer

cannot be broken down and maintain its identity

Question 20

Which of the following is not true about an ice cube and tap water?

Accepted Answer

they have different chemical properties

Question 21

Which variable is changed by the experimenter?

Accepted Answer

independent

Question 22

Which of these is not a physical property?

Accepted Answer

odor

Question 23

Which of these is an example of a homogeneous mixture?

Accepted Answer

Sour cream, Plastic

Question 24

Every chemical change involves physical changes.

Accepted Answer

True

Question 25

Two substances physically combined that appears the same throughout describes a...

Accepted Answer

homogeneous mixture

Question 26

Lithium Hydride would be...

Accepted Answer

a compound

Question 27

What causes some metals to blacken?

Accepted Answer

Tarnishing

Question 28

Vanilla flavored Coke would be an example of...

Accepted Answer

a homogeneous mixture

Question 29

What substance has variable composition?

Accepted Answer

heterogeneous mixture

Question 30

What term means to take up space and have mass?

Accepted Answer

matter

Question 31

What is an atom?

Accepted Answer

a pure substance, the simplest form of matter

Question 32

Corrosion

Accepted Answer

chemical property

Question 33

What holds elements in a compound together?

Accepted Answer

chemical bond

Question 34

A mixture of iron and sulfur can be separated by...

Accepted Answer

magnetic attraction

Question 35

Conductivity is..

Accepted Answer

the ability to transfer heat and electricity

Question 36

Which method will separate coins?

Accepted Answer

Filtration

Question 37

Which separation technique just naturally happens?

Accepted Answer

evaporation

Introduction to Chemistry Review

Questions 37

Introduction to Chemistry Review

Questions 37