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CYCLES OF MATTER UNIT TEST

Total questions: 25

Worksheet time: 25mins

Name
Class
Date
1.
What are plants called in a food chain?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Scavengers
2.
What are animals called in a food chain?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Plants
3.
What are the organisms that break down dead stuff?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Organisms
4.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
5.

A ____________________ shows the competition in food chains

a)

Environment

b)

Food Web

c)

Ecosystems

6.

A ____________________ shows how energy is passed from one living thing to another...

a)

ecosystem

b)

food chain

c)

habitat

7.

Click on the imgae to make it larger-- Choose the herbivores in the food web....

a)

hawk

b)

mouse

c)

rabbit

d)

snake

8.
The number to the lower side of an element is a 
a)
Subscript
b)
Superscript
c)
Coefficient
d)
Charge
9.
The number in front of a compound or element is a 
a)
Subscript
b)
Coefficient
c)
Superscript
d)
Charge
10.
A chemical reaction is balanced when
a)
both sides have the same elements
b)
Both sides have the same  number of atoms
c)
Same subscripts
d)
Same coefficients
11.
What is the Law of Conservation of mass?
a)
Mass is created in a chemical reaction
b)
Mass is created in a physical change
c)
New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
d)
Mass is never created or destroyed
12.
How many oxygen atoms are in this chemical formula?
a)
6 oxygen atoms
b)
2 oxygen atoms
c)
3 oxygen atoms
d)
4 oxygen atoms
13.
In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g. How many grams does reactant B should have? 
a)
4g
b)
5g
c)
9g
d)
14g
14.
Which are the reactants in the following reaction?
2Mg + O2 ---> 2MgO 
a)
Mg and O
b)
MgO
c)
Mg and MgO
d)
O and MgO
15.
Balance this equation-
__P4 + __O2 --> __P2O3
a)
it is already balanced
b)
2, 1, 3
c)
1, 2, 3
d)
1, 3, 2
16.

Plants take IN what for Photosynthesis...

a)

water

b)

oxygen

c)

carbon dioxide

d)

light energy

17.

Why do plants do photosynthesis?

a)

to release energy from food

b)

to take in food

c)

to make food

d)

to release oxygen

18.

What is the purpose of cellular respiration?

a)

to make food

b)

to release energy from food

c)

to take in food

d)

to release oxygen

19.

What is needed for cellular respiration....

a)

water

b)

oxygen

c)

sugar

d)

carbon dioxide

20.

What cycle is this?

a)

Carbon Cycle

b)

Water Cycle

c)

Nitrogen Cycle

d)

Carbon Dioxide & Oxygen cycle

21.

What is true about both photosynthesis and cellular respiration....

a)

both occur in animals

b)

they are not needed for living things

c)

both occur in plants

d)

both occur in plants and animals

22.

What happens to photosynthesis at NIGHT?

a)

it continues

b)

it stops almost completely

c)

it happens faster at night

d)

animals do it

23.

If an animal dies and decomposes it is part of which cycle below...

a)

water cycle

b)

nitrogen cycle

c)

carbon dioxide & oxygen cycle

d)

none of these

24.

What organisms are part of the carbon cycle?

a)

plants

b)

animals

c)

bacteria

d)

all living things

25.

Products of Photosynthesis....

a)

water

b)

carbon dioxide

c)

sugar

d)

oxygen

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