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1-3 Changes in Matter

Total questions: 40

Worksheet time: 23mins

Name
Class
Date
1.

What kind of change occurs if matter changes in amount, size, or shape?

a)

substance change

b)

chemical change

c)

physical change

d)

elemental change

2.
Ice melting
a)
Chemical Change
b)
Physical Change
3.
Water freezing
a)
Chemical Change
b)
Physical Change
4.
Shredding a piece of paper
a)
Chemical Change
b)
Physical Change
5.
Is making salt water to gargle with a physical or chemical change?
a)
physical
b)
chemical
6.
a)
Physical Change
b)
Chemical Change
7.
a)
Physical Change
b)
Chemical Change
8.
a)
Physical Change
b)
Chemical Change
9.
a)
Physical Change
b)
Chemical Change
10.
a)
Physical Change
b)
Chemical Change
11.
Which of the following is a sign that a chemical reaction has occurred?
a)
change in shape
b)
melting
c)
formation of a gas
d)
dissolving
12.
A change where one or more new substances are created.
a)
Physical Change 
b)
Chemical Change 
13.
Change in color is a physical change.
a)
True
b)
False
14.
Matter can not be created nor destroyed: it can only be
a)
Destroyed a little bit
b)
Invisible
c)
Transformed, changed
d)
None of the above
15.
Which of these is not a chemical reaction?
a)
Burning of wood
b)
Milk going bad
c)
Mixing vinegar and baking soda
d)
Melting of ice
16.
If reaction starts with 20g of reactants it should produce 
a)
a total of 40g of products
b)
a total of 10g of products
c)
a total of 80 g of products
d)
a total of 20g of products
17.

When sodium and chlorine combine to form sodium chloride, sodium chloride is the:

a)

Originator

b)

Reactant

c)

Product

d)

Produce

18.

How many atoms do you have in the compound 2MgCl2?

a)

2 atoms

b)

4 atoms

c)

6 atoms

d)

8 atoms

19.

Law of conservation of mass states the amounts of atoms in the reactants and the products...

a)

Increase

b)

Decrease

c)

Stay the same

d)

No correct answer

20.

Does the equation H2+O2 →H2O follow the Law of Conservation of Mass?

a)

Yes, because the atoms are equal.

b)

No, because more info is needed.

c)

No, because there are more atoms in the product.

d)

No, because there are more atoms in the reactant.

21.

What is Energy?

a)

The ability to do anything

b)

The ability to cause change

c)

The investigation of nature

d)

A fact of life

22.
What unit of measurement is used when recording the temperature of boiling water? 
a)
milliliter
b)
degrees Celsius
c)
gram
d)
millimeter
23.

Select the temperature in °C

a)

54°C

b)

12°C

c)

20°C

d)

60°C

24.
Molecules are always ____________________ (with the exception of absolute zero). 
a)
in motion
b)
frozen
25.
___________________ is the measure of kinetic energy of particles. 
a)
A thermometer
b)
Expansion
c)
Farenheit
d)
Temperature
26.
Which tool is used to measure thermal energy?
a)
oven 
b)
scale
c)
thermometer
27.

Heat will always transfer from the ___________ object to the ________ object.

a)

The hottest object to the coolest object.

b)

The coolest object to the hottest object.

c)

The solid object to the liquid object.

d)

The liquid object to the solid object.

28.
The energy of moving particles
a)
heat
b)
thermal energy
c)
school
d)
temperature
29.
Thermal energy and temperature are the same.
a)
True
b)
False
30.

Thermal energy is the __________ _________ energy of moving particles

a)

total potential

b)

average potential

c)

average kinetic

d)

total kinetic

31.

Temperature is the __________ _________ energy of moving particles

a)

average potential

b)

average kinetic

c)

total potential

d)

total kinetic

32.

Temperature always measures the ___________ movement of molecules

a)

median

b)

mode

c)

total

d)

average

33.

Which will have the HIGHEST thermal energy?

a)

Hot cup of tea

b)

Cold bathtub water

c)

Huge lake

d)

Warm bowl of soup

34.
What type of reaction occurs in a hand warmer
a)
exothermic
b)
endothermic
35.
In an endothermic reaction, heat is ...
a)
taken in or absorbed
b)
given out or released 
36.
Have you ever eaten sherbet sweets candy? They fizz in your mouth and your tongue feels cold. Why do you think that is?
a)
It is an exothermic reaction
b)
It is an endothermic reaction
c)
It is made of ice
d)
It is dissolving your mouth
37.

_____ reactions usually feel hot!

a)

endothermic

b)

exothermic

38.

____ reactions usually feel cold.

a)

endothermic

b)

exothermic

39.

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

40.

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

a)

Endothermic

b)

Reversible

c)

Exothermic

d)

Exotermic

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