Quiz about Science 9 Chemistry

Question 1

What is this WHMIS symbol?

Accepted Answer

Corrosive

Answer

Explosive

Answer

Health Hazards

Answer

Toxic

Question 2

What is this WHMIS symbol?

Accepted Answer

Health Hazard

Answer

Corrosive

Answer

Compressed Gas

Answer

Oxidizing

Question 3

What is this WHMIS symbol?

Accepted Answer

Compressed Gas

Answer

Toxic

Answer

Flammable

Answer

Reactive

Question 4

What WHMIS symbol is this?

Accepted Answer

Environmental

Answer

Health Hazard

Answer

Flammable

Answer

Toxic

Question 5

The simplest "building blocks" of matter are...

Accepted Answer

Elements

Answer

Protons

Answer

Solutions

Answer

Compounds

Question 6

These orbit around the nucleus and have a negative charge

Accepted Answer

Electrons

Answer

Protons

Answer

Neutrons

Answer

Atoms

Question 7

Horizontal rows in the periodic table

Accepted Answer

Periods

Answer

Groups

Answer

Tables

Answer

Categories

Question 8

The number of protons in an atom's nucleus

Accepted Answer

Atomic Number

Answer

Atomic Mass

Answer

Family

Answer

Neutrons

Question 9

Anything that has volume (takes up space) and has mass

Accepted Answer

Matter

Answer

Energy

Question 10

The transition of a substance from solid to liquid state

Accepted Answer

Melting

Answer

Freezing

Answer

Evaporation

Answer

Condensation

Question 11

The transitition of a substance from gas to liquid state

Accepted Answer

Condensation

Answer

Melting

Answer

Freezing

Answer

Evaporation

Question 12

Consisting of parts all of the same kind (looks the same)

Accepted Answer

Homogeneous

Answer

Heterogeneous

Answer

Mechanical Mixture

Answer

Suspension

Question 13

Represents the sum of protons and neutrons in an atom

Accepted Answer

Atomic Mass

Answer

Atomic Number

Answer

Period

Answer

Electrons

Question 14

These mixtures are heterogeneous. They have a non-uniform appearance and are easily separated using simple means

Accepted Answer

Mechanical Mixtures

Answer

Compounds

Answer

Solutions

Answer

Elements

Question 15

Pure substances that are made up of 2 or more different elements

Accepted Answer

Compounds

Answer

Elements

Answer

Solutions

Answer

Suspensions

Question 16

Plastics, cosmetics and spandex are examples of what type of substances made from what type of process?

Accepted Answer

Synthetic (industrial)

Answer

Natural

Question 17

Wood, silk, and cotton are examples of substances that are made by what type of process?

Accepted Answer

Natural

Answer

Synthetic (industrial)

Question 18

What chemical property is shown?

Accepted Answer

Colour

Answer

Texture

Answer

Taste

Answer

Freezing

Question 19

What chemical property is shown?

Accepted Answer

Texture

Answer

Colour

Answer

Odour

Answer

Melting point

Question 20

What chemical property is shown?

Accepted Answer

Flammable

Answer

Boiling point

Answer

Crystal Structure

Answer

Texture

Question 21

If an atom has more electrons than protons - the atom has what kind of charge?

Accepted Answer

Negative

Answer

Positive

Answer

Neutral

Question 22

If an atom has more protons than electrons - the atom will have what type of charge?

Accepted Answer

Positive

Answer

Negative

Answer

Neutral

Question 23

If an atom has the SAME number of protons and electrons - what is the charge of the atom?

Accepted Answer

Neutral

Answer

Positive

Answer

Negative

Question 24

NaHCO₃has how many hydrogen (H) atoms?

Accepted Answer

1

Answer

2

Answer

3

Answer

4

Question 25

Fe₂O₃has how many oxygen (O) atoms?

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Question 26

NH₃ has how many nitrogen (N) atoms?

Accepted Answer

1

Answer

2

Answer

3

Answer

4

Question 27

What classification of matter is... gravel & sand?

Accepted Answer

Mechanical Mixture

Answer

Compound

Answer

Colloid

Answer

Element

Question 28

What classification of matter is... Water (H₂O)?

Accepted Answer

Compound

Answer

Element

Answer

Solution

Answer

Suspension

Question 29

What classification of matter is... Italian Salad Dressing?

Accepted Answer

Suspension

Answer

Compound

Answer

Solution

Answer

Mechanical Mixture

Question 30

What classification of matter is... brass?

Accepted Answer

Solution

Answer

Element

Answer

Compound

Answer

Colloid

Question 31

Is cutting a piece of paper a chemical or physical change?

Accepted Answer

Physical

Answer

Chemical

Question 32

Is cooking pancakes a physical or chemical change?

Accepted Answer

Chemical

Answer

Physical

Question 33

Is blow drying your hair a chemical or physical change?

Accepted Answer

Physical

Answer

Chemical

Question 34

Is an apple rotting a chemical or physical change?

Accepted Answer

Chemical

Answer

Physical

Question 35

Heat is ____________ as a substance changes from solid to liquid to gas

Accepted Answer

Added

Answer

Removed

Answer

Stays the same

Question 36

Volume ______________ as a substance changes from gas to liquid to solid

Accepted Answer

Decreases

Answer

Increases

Answer

Stays the same

Question 37

What keeps its own shape and has definite volume?

Accepted Answer

Solid

Answer

Liquid

Answer

Gas

Question 38

What has NO definite volume and no definite shape?

Accepted Answer

Gas

Answer

Solid

Answer

Liquid

Question 39

What is an example of a synthetic chemical?

Accepted Answer

polyester

Answer

wood

Answer

cotton

Answer

wool

Question 40

What is an example of a natural chemical?

Accepted Answer

cotton

Answer

nylon

Answer

polyester

Answer

fleece

Question 41

Which of the following is an example of an element?

Accepted Answer

Carbon

Answer

Water

Answer

Oil

Answer

Carbon Dioxide

Question 42

Which of the following is not one of the 4 statements that make up Dalton's Atomic Theory?

Accepted Answer

The entropy of an isolated system will increase

Answer

All matter is made up of small particles called atoms

Answer

Atoms cannot be created or destroyed by ordinary means

Answer

Atoms combine with other atoms to form larger particles called molecules

Question 43

Breaking a toothpick is an example of which type of change?

Accepted Answer

Physical Change

Answer

Chemical Change

Answer

Mechanical Change

Answer

No Change

Question 44

Adding hydrochloric acid (HCl) to a magnesium ribbon strip is an example of what type of change?

Accepted Answer

Chemical Change

Answer

Physical Change

Answer

No Change

Answer

Mechanical Change

Question 45

An explosion is an example of a:

Accepted Answer

Chemical Change

Answer

Physical Change

Question 46

Which of the following describes a chemical change?

Accepted Answer

Bonds are broken and rearranged in order to form a new substance

Answer

No reaction occurs

Answer

A state change occurs

Answer

The bonds remain the same and no new substance is formed

Question 47

Solids take the shape of their container.

Accepted Answer

False

Answer

True

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