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conservation Of Energy

Total questions: 10

Worksheet time: 7mins

Name
Class
Date
1.

The Law of Conservation of Energy states:

a)

Energy can created or destroyed but not transformed

b)

Energy cannot be created or destroyed, it can only transformed

c)

Energy can't be created, destroyed or transformed

2.

Which of the following is an example of energy transformation according to the law of conservation of energy?

a)

A car engine converting chemical energy from fuel into kinetic energy.

b)

A battery losing all its energy without any output.

c)

A light bulb creating energy from nothing.

d)

A wind turbine destroying wind energy.

3.

In a closed system, if the potential energy decreases, what happens to the kinetic energy according to the law of conservation of energy?

a)

The kinetic energy remains the same.

b)

The kinetic energy decreases.

c)

The kinetic energy increases.

d)

The kinetic energy is destroyed.

4.

Which of the following statements is true according to the law of conservation of energy?

a)

The total amount of energy in a closed system can change.

b)

Energy can be created in a closed system.

c)

The total amount of energy in a closed system remains constant.

d)

Energy can be destroyed in a closed system.

5.
Measure of the amount of matter 
a)
mass
b)
volume
c)
weight
d)
density
6.
Smallest unit of an element
a)
compound
b)
atom
c)
molecule
d)
product
7.
Substance made up of chemically combined elements
a)
atom
b)
element
c)
electron
d)
compound
8.
Substances that form as the result of a chemical reaction
a)
products
b)
reactants
c)
coefficients
d)
subscripts
9.
Which  of the following is a balanced equation?
a)
Na   +   Cl2   -->  NaCl
b)
H2  +  O2  --> H2O
c)
Ca   +   Br  -->  CaBr2
d)
Na   +  F  -->  NaF
10.
A chemical equation tells us 
a)
the reactants and the products.
b)
the elements that make up the reactants and the products.
c)
the number of atoms that make up the reactants and the products.
d)
All of the above.