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Science 9 Chemistry

Total questions: 47

Worksheet time: 24mins

Name
Class
Date
1.

What is this WHMIS symbol?

a)

Explosive

b)

Health Hazards

c)

Corrosive

d)

Toxic

2.

What is this WHMIS symbol?

a)

Corrosive

b)

Compressed Gas

c)

Oxidizing

d)

Health Hazard

3.

What is this WHMIS symbol?

a)

Toxic

b)

Flammable

c)

Reactive

d)

Compressed Gas

4.

What WHMIS symbol is this?

a)

Health Hazard

b)

Flammable

c)

Environmental

d)

Toxic

5.

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

a)

Protons

b)

Solutions

c)

Elements

d)

Compounds

6.

These orbit around the nucleus and have a negative charge

a)

Protons

b)

Electrons

c)

Neutrons

d)

Atoms

7.

Horizontal rows in the periodic table

a)

Groups

b)

Periods

c)

Tables

d)

Categories

8.

The number of protons in an atom's nucleus

a)

Atomic Mass

b)

Family

c)

Neutrons

d)

Atomic Number

9.

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

a)

Energy

b)

Matter

10.

The transition of a substance from solid to liquid state

a)

Freezing

b)

Evaporation

c)

Melting

d)

Condensation

11.

The transitition of a substance from gas to liquid state

a)

Melting

b)

Freezing

c)

Evaporation

d)

Condensation

12.

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

a)

Heterogeneous

b)

Mechanical Mixture

c)

Homogeneous

d)

Suspension

13.

Represents the sum of protons and neutrons in an atom

a)

Atomic Mass

b)

Atomic Number

c)

Period

d)

Electrons

14.

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

a)

Compounds

b)

Solutions

c)

Elements

d)

Mechanical Mixtures

15.

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

a)

Elements

b)

Compounds

c)

Solutions

d)

Suspensions

16.

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

a)

Natural

b)

Synthetic (industrial)

17.

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

a)

Natural

b)

Synthetic (industrial)

18.

What chemical property is shown?

a)

Texture

b)

Taste

c)

Colour

d)

Freezing

19.

What chemical property is shown?

a)

Colour

b)

Odour

c)

Melting point

d)

Texture

20.

What chemical property is shown?

a)

Boiling point

b)

Flammable

c)

Crystal Structure

d)

Texture

21.

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

a)

Positive

b)

Negative

c)

Neutral

22.

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

a)

Positive

b)

Negative

c)

Neutral

23.

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

a)

Positive

b)

Negative

c)

Neutral

24.

NaHCO3 has how many hydrogen (H) atoms?

a)

1

b)

2

c)

3

d)

4

25.

Fe2O3 has how many oxygen (O) atoms?

a)

1

b)

2

c)

3

d)

4

26.

NH3 has how many nitrogen (N) atoms?

a)

1

b)

2

c)

3

d)

4

27.

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

a)

Compound

b)

Colloid

c)

Mechanical Mixture

d)

Element

28.

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

a)

Element

b)

Compound

c)

Solution

d)

Suspension

29.

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

a)

Compound

b)

Solution

c)

Mechanical Mixture

d)

Suspension

30.

What classification of matter is... brass?

a)

Element

b)

Compound

c)

Solution

d)

Colloid

31.

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

a)

Chemical

b)

Physical

32.

Is cooking pancakes a physical or chemical change?

a)

Chemical

b)

Physical

33.

Is blow drying your hair a chemical or physical change?

a)

Chemical

b)

Physical

34.

Is an apple rotting a chemical or physical change?

a)

Chemical

b)

Physical

35.

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

a)

Added

b)

Removed

c)

Stays the same

36.

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

a)

Increases

b)

Decreases

c)

Stays the same

37.

What keeps its own shape and has definite volume?

a)

Solid

b)

Liquid

c)

Gas

38.

What has NO definite volume and no definite shape?

a)

Solid

b)

Liquid

c)

Gas

39.
What is an example of a synthetic chemical?
a)
polyester 
b)
wood 
c)
cotton
d)
wool
40.
What is an example of a natural chemical?
a)
nylon
b)
polyester
c)
cotton
d)
fleece
41.
Which of the following is an example of an element?
a)
Water
b)
Carbon 
c)
Oil
d)
Carbon Dioxide 
42.
Which of the following is not one of the 4 statements that make up Dalton's Atomic Theory?
a)
All matter is made up of small particles called atoms
b)
Atoms cannot be created or destroyed by ordinary means
c)
Atoms combine with other atoms to form larger particles called molecules
d)
The entropy of an isolated system will increase 
43.
Breaking a toothpick is an example of which type of change?
a)
Chemical Change 
b)
Mechanical Change 
c)
No Change 
d)
Physical Change 
44.
Adding hydrochloric acid (HCl) to a magnesium ribbon strip is an example of what type of change?
a)
Physical Change 
b)
Chemical Change 
c)
No Change 
d)
Mechanical Change
45.
An explosion is an example of a: 
a)
Chemical Change 
b)
Physical Change
46.
Which of the following describes a chemical change?
a)
Bonds are broken and rearranged in order to form a new substance 
b)
No reaction occurs
c)
A state change occurs
d)
The bonds remain the same and no new substance is formed
47.
Solids take the shape of their container.
a)
True
b)
False

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