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Types of Chemical Reactions

Total questions: 40

Worksheet time: 46mins

Name
Class
Date
1.

Complete the word equation below:

Acid + base (alkali) --> ............... + water

a)

water

b)

salt

c)

gold

d)

metal

2.
Pure water has a pH of 7. Pure water _______.
a)

is a base

b)

is a neutral substance

c)

could be either an acid or a base

d)

is an acid

3.

What colour is Universal indicator when the solution is neutral? (think of the lab)

a)

Red

b)

Green

c)

Blue

d)

Purple

4.

What type of reaction occurs when you react an acid with a base (alkali)?

a)

combustion

b)

decomposition

c)

no reaction

d)

neutralisation

5.

ph range of acids are .....

a)

0-6

b)

7

c)

8-14

d)

4-10

6.

ph range of bases (alkalis) is .....

a)

0-6

b)

7

c)

8-14

d)

4-10

7.

What colour change would you see if you added nitric acid to sodium hydroxide (base) and universal indicator? (think of your lab)

a)

red -> blue

b)

purple -> green

c)

red -> yellow

d)

pink -> colourless

8.

The reaction between _______ and _______ is known as ________.

a)

Base, Salt, Neutralisation

b)

Acid, Water, Combination

c)

Acid, Base, Decomposition

d)

Acid, Base, Neutralisation

9.

What are the three elements must be present for a fire to occur?

a)

oxidizing agent, ignition temperature, fuel

b)

fuel, carbon, ignition temperature,

c)

oxidizing agent, flame, ignition temperature,

d)

oil, nitrogen, oxidizing agent

10.

A material which combusts and releases heat while it burns is called:

a)

a fuel

b)

a source of ignition temperature

c)

a source of oxidizing agent

11.

Tick all the examples of a fuel

a)

wood

b)

air

c)

paper

d)

water

e)

diesel

12.

Tick all the sources of ignition temperature.

a)

a lighter

b)

a spark

c)

friction

d)

gasoline

e)

wood

13.

To turn off a fire one of the sides of the fire triangle must be removed. What is being removed when the teacher covers a candle with a glass plate.

a)

Oxidizing agent (oxygen)

b)

ignition temperature (heat)

c)

fuel

14.

To turn off a fire one of the sides of the fire triangle must be removed. What is being removed when someone turns off the gas stove by rotating the knob?

a)

oxidizing agent

b)

ignition temperature (heat)

c)

fuel

15.

To turn off a fire one of the sides of the fire triangle must be removed. What is being removed when someone throws a sand on a campfire?

a)

oxidizing agent

b)

ignition temperature (heat)

c)

fuel

16.

To turn off a fire one of the sides of the fire triangle must be removed. What is being removed when someone uses a fire blanket on a burning pan?

a)

oxidizing agent

b)

ignition temperature

c)

fuel

17.

To turn off a fire one of the sides of the fire triangle must be removed. What is being removed when someone uses water to put out a burning tree?

a)

oxidizing agent

b)

ignition temperature

c)

fuel

18.

A match stick is on fire. What is the source of oxidizing agent?

a)

friction

b)

wood

c)

air

19.

A match stick catches fire. What is the source of ignition temperature?

a)

friction

b)

wood

c)

air

20.

A match stick is on fire. What is the source of fuel?

a)

friction

b)

wood

c)

air

21.

What is the scientific name for burning?

a)

combustion

b)

flammable

c)

convection

22.

Photosynthesis is a biological process that occurs in autotrophs. Which of the following is produced as a result of photosynthesis?

a)

Water and light

b)

Glucose and chlorophyll

c)

Glucose and oxygen

d)

Carbon dioxide and water

23.

Where do the reactions of photosynthesis take place in autotrophs?

a)

Chloroplast

b)

Mitochondria

c)

Cell Walls

d)

Cytoplasm

24.

Where does the energy for plants to perform photosynthesis come from?

a)

Breaking down ATP

b)

sunlight

c)

glucose metabolism

d)

None of the Above

25.

What is the chemical equation for photosynthesis? Choose the BEST answer

a)

C6H12O6 + O2 -> CO2 + H2O

b)

CO2 + H2O --> C6H12O6 + O2

c)

6 CO2 + 6 H2O --> C6H12O6 + 6 O2

d)

C6H12O6 + 6 O2 -> 6 CO2 + 6 H2O

26.

Cellular Respiration involves the chemical breakdown of _____ to form cellular energy (ATP)

a)

Fats

b)

Fructose

c)

Glucose

d)

Proteins

27.

Which of the following chemical equations properly demonstrates Cellular Respiration? Choose the BEST answer.

a)

C6H12O6 + O2 --> H2O + CO2

b)

H2O + CO2 -> C6H12O6 + O2

c)

C6H12O6 + 6 O2 -> 6 H2O + 6 CO2

d)

6 H2O + 6 CO2 -> C6H12O6 + 6 O2

28.

True of False, Plants can perform Cellular Respiration and Photosynthesis

a)

False

b)

True

29.
What are the two products that are formed in photosynthesis?
a)
Oxygen and carbon dioxide
b)
Water and oxygen
c)
Oxygen and glucose
d)
Water and glucose
30.
What are the reactants (what's needed) for photosynthesis?
a)
glucose and oxygen
b)
light, water, and carbon dioxide
c)

oxygen and carbon dioxide

d)

light and water

31.

What is one of the reactants (raw materials) going into cellular respiration?

a)

Energy

b)

Sugar (Glucose)

c)

Carbon dioxide

d)

Water

32.

Which organism(s) perform cellular respiration?

a)

animals only

b)

plants only

c)

both animals and plants

d)

decomposers

33.

What type of reaction occurs when someone takes an antacid for 'heartburn'.

a)

Photosynthesis

b)

Cellular respiration

c)

Combustion

d)

Acid / base neutralization

34.

What type of reaction occurs when fireworks go off?

a)

Photosynthesis

b)

Slow combustion

c)

Rapid combustion

d)

Acid / base neutralization

35.

What type of reaction occurs when leaves rot?

a)

Photosynthesis

b)

Slow combustion

c)

Rapid combustion

d)

Acid / base neutralization

36.

What type of reaction occurs when lime is spread over a lake (liming)?

a)

Photosynthesis

b)

Slow combustion

c)

Rapid combustion

d)

Acid / base neutralization

37.

In a neutralisation reaction, ______ and ______ are produced.

a)

Base, Salt,

b)

Acid, Water,

c)

Acid, Base,

d)

Salt, Water.

38.

In a neutralisation reaction, ______ and ______ react.

a)

Base, Salt,

b)

Acid, Water,

c)

Acid, Base,

d)

Salt, Water.

39.

What are the two signs of rapid combustion?

a)

light and sound

b)

light and heat

c)

heat and smoke

40.

An airplane flies over a lake where the fish are dying due to acid rain. It releases a white powder into the lake. This process is called ______.

a)

photosynthesis

b)

slow combustion

c)

rapid combustion

d)

liming