wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

C3 - Chemical Reactions

Total questions: 69

Worksheet time: 2hrs 48mins

Name
Class
Date
1.
Ice melting
a)
Chemical Change
b)
Physical Change
2.
Water freezing
a)
Chemical Change
b)
Physical Change
3.
Wood burned in a fireplace
a)
Chemical Change
b)
Physical Change
4.
Cake batter baked in an oven
a)
Chemical Change
b)
Physical Change
5.
Blue liquid and yellow liquid mixed to make a green liquid
a)
Chemical Change
b)
Physical Change
6.
Baking soda and vinegar combine to make carbon dioxide
a)
Chemical Change
b)
Physical Change
7.
Light used to produce food in plants
a)
Chemical Change
b)
Physical Change
8.
Glass bottle that is shattered
a)
Chemical Change
b)
Physical Change
9.
Copper roof changing color
a)
Chemical Change
b)
Physical Change
10.
Shredding a piece of paper
a)
Chemical Change
b)
Physical Change
11.
Rust on an iron fence
a)
Chemical Change
b)
Physical Change
12.
Boiling water
a)
Chemical Change
b)
Physical Change
13.
Burning coal
a)
Chemical Change
b)
Physical Change
14.

A physical law that states that matter is neither created or destroyed.

a)

conservation of state

b)

matter equalization

c)

conservation of mass

d)

conservation of volume

15.

The temperature at which a substance changes state from a liquid to a gas.

a)

boiling point

b)

melting point

c)

freezing point

16.

The temperature at which a substance changes state from a liquid to a solid.

a)

boiling point

b)

melting point

c)

freezing point

17.

The temperature at which a substance changes state from a solid to a liquid.

a)

boiling point

b)

melting point

c)

freezing point

18.

A ________________ begins and ends with the same type of matter.

a)

conservative change

b)

physical change

c)

neutral change

d)

chemical change

19.

A _________________ begins with one type of matter and ends with another type of matter.

a)

neutral change

b)

physical change

c)

chemical change

d)

radical change

20.

All types of matter have the same boiling point and freezing point.

a)

True

b)

False

21.

All types of matter exist in 3 states: solid, liquid, gas.

a)

True

b)

False

22.

The amount of water on Earth remains the same even when the state changes.

a)

True

b)

False

23.

Matter changing state is an example of a physical change.

a)

True

b)

False

24.

What is the freezing point of water in Celsius and Fahrenheit?

a)

10 o C, 212 o F

b)

0 o C, 32 o F

c)

0 o C, 10 o F

d)

100 o C, 212 o F

25.

Adding heat energy to matter causes the particles in matter to ___________.

a)

slow down

b)

move faster

c)

evaporate

d)

stop moving

26.

Removing heat energy from matter causes the particles in matter to ___________.

a)

slow down

b)

move faster

c)

disappear

d)

move up

27.
CaCO3 represents a chemical
a)
Symbol
b)
Formula
c)
Subscript
d)
Reaction
28.
The substances listed on the left side of a chemical equation are the
a)
Products
b)
Coefficients
c)
Precipitates
d)
Reactants
29.
In chemical reactions, what does the principle of conservation of mass mean?
a)
Matter is not created or destroyed.
b)
The total mass of the reactants is greater than the total mass of the products.
c)
The total mass of the reactants is less than the total mass of the products.
d)
Matter is not changed.
30.
A molecule is smaller than an atom.
a)
True
b)
False
31.
How many Oxygen (O) atoms are in 2C2HO8Cl2
a)
2
b)
16
c)
8
d)
5
32.
How many Hydrogen (H) atoms are in NH3O5
a)
3
b)
4
c)
5
d)
1
33.
A molecule is________
a)
a glob of gelatinous goo
b)
smaller than an atom
c)
filled with raisons
d)
more than one atom bonded together
34.
What is the  chemical formula for Glucose?
a)
GLc
b)
C6H1206
c)
G12H2C6
d)
Glucose
35.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
36.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
37.
How many Aluminum are in Al2O3?
a)
3
b)
2
c)
5
38.
How many O's are in Al₂(SO₄)₃
a)
4
b)
12
c)
7
d)
24
39.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
40.
Number of H in 3(NH₄)₂CrO₄
a)
4
b)
2
c)
8
d)
24
41.
Which of the following shows the correct way to balance the chemical equation?
Fe + O2 -> Fe2O3
a)
4Fe + 3O2 -> 2Fe2O3
b)
2 Fe + 3O2 -> Fe2O6
c)
4 Fe + O6 -> 2Fe2O3
d)
None of the options are correctly balanced.
42.
Which of the following reactions is balanced?
a)
2CH4 + O2 -> CO2 + H2O
b)
CH4 + 2O2 -> CO2 + H2O
c)
CH4 + 2O2 -> CO2 + 2H2O
d)
None of the chemical equations are balanced.
43.
Balance this equation...
HgO --> Hg + O2
a)
It is balanced 
b)
2HgO --> Hg + O2
c)
2HgO --> 2Hg + O2
d)
I don't know...Oh well!
44.
How many HCl molecules do you need to balance this equation? 
Mg +  __HCl --->  MgCl2 + H2
a)
1
b)
2
c)
3
d)
4
45.
Balance this equation.
_CF4 + _Br2 -- _CBr4 + _F2
a)
2,1,2,1
b)
1,2,2,1
c)
1,2,1,2
d)
2,2,2,2
46.
Which coefficients balance this equation:
NH3  +  O2 ---->   NO  + H2O
a)
2,3,5,6
b)
5,5,4,6
c)
4,6,4,5
d)
4,5,4,6
47.
Balance this equation.
_CH4 + _O2 --> _CO2 + _H2O
a)
1,2,1,1
b)
2,1,2,1
c)
1,2,1,2
d)
0,2,0,2
48.
Balance this equation
_Al +_HCl --> _H2 +_AlCl3
a)
2, 6, 3, 2
b)
it is already balanced
c)
4, 12, 3, 4
d)
2, 1, 4, 5
49.
Balance this equation.
_SnO2 +_H2-->_Sn +_H2O
a)
1,1,2,1
b)
1,2,1,1
c)
1,2,1,2
d)
1,2,2,1
50.

Which of the following best describes exothermic chemical reactions?

a)

They never release heat.

b)

They always release heat.

c)

They never occur spontaneously.

d)

They always occur spontaneously.

51.

What term is given to a reaction which transfers heat energy to the surroundings?

a)

Endothermic

b)

Reversible

c)

Exothermic

d)

Exotermic

52.

When barium hydroxide and ammonium chloride react, the temperature of the mixture decreases. What kind of reaction is this?

a)

Endothermic

b)

Decomposition

c)

Exothermic

d)

Indothermic

53.

When calcium reacts with water, the temperature changes from 18°C to 39°C. Which statement is correct?

a)

The solution at the end is acidic

b)

The reaction is reversible

c)

The reaction is exothermic

d)

The reaction is endothermic

54.

What type of chemical reaction absorbs energy and requires energy for the reaction to occur?

a)

Endothermic

b)

Exotermic

c)

Exothermic

d)

Endotermic

55.

A substance that produces hydrogen ions in water.

a)

Neutral substance

b)

An alkali

c)

An acid

d)

Salts

56.

A substance that produces hydroxide ions in water.

a)

neutral substances

b)

salts

c)

An acid

d)

An alkali

57.

The ion that every acid donates

a)

Hydrogen ions

b)

Hydroxide ions

c)

Hydrogen atoms

d)

Hydrogen molecules

58.

The ion that every alkali donates.

a)

Hydrogen ions

b)

Hydroxide ions

c)

Hydroxide atoms

d)

water

59.

A chemical dye that can be added to a substance that changes colour depending on whether the substance is acidic, neutral or alkaline.

a)

A poison

b)

An alkali

c)

An acid

d)

An indictor

60.

A substance that has a pH of exactly 7.

a)

acid

b)

neutral

c)

alkaline

d)

toxic

61.

The reaction between an;

acid and an alkali acid and base acid and carbonate

a)

endothermic

b)

displacement

c)

neutralisation

d)

crystallisation

62.

A measure of the acidity of a substance. It identifies if a substance is acidic, neutral or alkaline.

a)

Ph scale

b)

table of ions

c)

periodic table

d)

pH scale

63.

A substance that dissolves in water.

a)

acids

b)

insoluble salts

c)

soluble salts

d)

alkalis

64.
a)

PH scale

b)

pH ruler

c)

pH scale

d)

pH statistical tables

65.

Is it acid or alkali when the pH is 4 pH

a)

Acid

b)

Alkali

c)

Neutral

66.

Lemon contains acid or alkali or neutral

a)

Acid

b)

Alkali

c)

Neutral

67.

Tell 3 things that contain acid

a)

Lemon, baking soda, water

b)

Water, tomato, vinegar

c)

Vinegar, hand soap, drain cleaner

d)

Vinegar, milk, hydrochloric acid

68.

What is an example of neutral

a)

Tomato

b)

Water

c)

Milk

d)

Drain cleaner

69.

Tell 3 things contain alkali

a)

Lemon, milk, water

b)

Milk, household bleach, tomato

c)

Baking soda, toothpaste, drain cleaner

d)

Water, apple, banana

Similar Resources on Wayground

Chemistry Reviewer for 3rd Quarter

74 questions

Chemistry Reviewer for 3rd Quarter

quiz

Worksheet

•

9th Grade

Ch. 4: Atomic Structure Review

70 questions

Ch. 4: Atomic Structure Review

quiz

Worksheet

•

9th Grade

Chemical Bonding

68 questions

Chemical Bonding

quiz

Worksheet

•

9th - 12th Grade

Periodic table review

67 questions

Periodic table review

quiz

Worksheet

•

9th - 12th Grade

Periodic Table WebQuest

68 questions

Periodic Table WebQuest

quiz

Worksheet

•

8th - 12th Grade

Benchmark Review

70 questions

Benchmark Review

quiz

Worksheet

•

8th Grade - University

Semester One Exam Review

70 questions

Semester One Exam Review

quiz

Worksheet

•

9th - 12th Grade

32 Common Element names & symbols

64 questions

32 Common Element names & symbols

quiz

Worksheet

•

9th - 11th Grade