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7.2.3 Vocabulary - Endothermic & Exothermic Reactions

Total questions: 42

Worksheet time: 31mins

Name
Class
Date
1.

In an exothermic reaction, heat is....

a)

Absorbed

b)

Released

2.

In an endothermic reaction, heat is...

a)

Absorbed

b)

Released

3.

Is breaking a hand-warmer pack endothermic or exothermic?

a)

Endothermic

b)

Exothermic

4.

When cooking eggs, is in endothermic or exothermic?

a)

Endothermic

b)

Exothermic

5.

Is a melting snowman endothermic or exothermic?

a)

Endothermic

b)

Exothermic

6.

An iron nail getting rusty loses heat. Is the endothermic or exothermic?

a)

Endothermic

b)

Exothermic

7.
What is electrolysis?
a)
breaking down of a compound using a current
b)
making a compound using a current
8.
Will electrical energy flow in an open circuit?
a)
yes
b)
no
9.
What type of energy increases as molecules move faster? 
a)
mechanical energy
b)
electrical energy
c)
thermal energy
d)
sound energy
10.
How does heat always transfer?
a)
from cold to hot
b)
from hot to cold
c)
from liquid to solid
d)
from gas to liquid
11.

What does the "thermal" in thermal decomposition mean?

a)

sulfur

b)

catalyst

c)

heat

d)

oven

12.

Why does thermal decomposition need heat energy

a)

to make magic

b)

to break bonds

c)

to make water

d)

to work as a catalyst

13.
Ice melting
a)
Chemical Change
b)
Physical Change
14.
Wood burned in a fireplace
a)
Chemical Change
b)
Physical Change
15.
A change in the size, shape, or state of matter.
a)
chemical change
b)
physical change
c)
chemical reaction
d)
electron change
16.
A change in which NEW substances are formed.
a)
Chemical change
b)
Physical change
c)
Casual change
d)
Formal change
17.
In an endothermic reaction, heat is ,,,
a)
taken in
b)
given out
18.
In an exothermic reaction, heat is ...
a)
taken in
b)
given out
19.

A reaction where energy is absorbed is

a)

Endothermic

b)

Exothermic

c)

Not a chemical reaction

20.

A reaction where energy is released is

a)

Endothermic

b)

Exothermic

c)

Not a chemical reaction

21.
If a chemical reaction is EXOTHERMIC, the temperature would....
a)
Stay the same
b)
Increase
c)
Decrease
22.
all matter is made of what 
a)
energy 
b)
atoms 
c)
electrons 
d)
compounds 
23.
A particle that moves around the nucleus is a(n)...
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
24.
The subatomic particle with a negative charge is the
a)
electron
b)
proton
c)
neutron
d)
nucleus 
25.
What are examples of a chemical change
a)
When sugar is cooked to make caramel
b)
When you melt a ice cube
26.
Example of a physical change
a)
When you chop up wood
b)
When you burn wood
27.
What do we call a chemical substance made up of 2 or more different types atoms bonded together?
a)
formula
b)
atom
c)
subscript
d)
compound
28.
All ____________ are made up of two or more atoms bonded together.
a)
atoms
b)
molecules
c)
electrons
d)
elements
29.
Bonds between atoms in a molecule form as a result of the sharing  of?
a)
formulas
b)
electrons
c)
atoms
d)
chemicals
30.

When a solute can dissolve in a solvent we say it is

a)

solute

b)

dissolves

c)

soluble

d)

solution

31.

The substance that dissolves in the solvent is called the

a)

solute

b)

solvent

c)

soluble

d)

saturated

32.

The mixture of solute and solvent is called the

a)

soluble

b)

solute

c)

solution

d)

dissolves

33.
Mark and Susan added salt to a flask of water at 9:05 A.M. 
   

What happened in the next 2 minutes? 
a)
The salt disappeared
b)
the salt dissolved in the water
c)
The temperature of the water increased.
d)
The salt settled to the bottom of the flask
34.
What kind of energy is represented in this picture?
a)
Thermal
b)
Potential
c)
Nuclear
d)
Mechanical
35.
What kind of energy does this device use?
a)
Chemical
b)
Electrical
c)
Thermal
d)
Chemical
36.
What kind of energy is represented in the picture?
a)
Thermal
b)
Chemical
c)
Sound
d)
Nuclear
37.
A battery converts what type of energy to another?
a)
sound to kinetic
b)
light to heat
c)
mechanical to electrical
d)
chemical to electrical
38.
The glow sticks produce light for a short amount of time. The light from the glow stick is a conversion from what to what?
a)
thermal to light
b)
gravitational to potential
c)
radiant to electrical
d)
chemical to light
39.
Energy that is stored in bonds between atoms is:
a)
Mechanical energy
b)
Chemical energy
c)
Kinetic energy
d)
Nuclear energy
40.
Energy caused by the movement in the particles of matter. It is a form of kinetic energy.
a)
Nuclear energy
b)
Sound energy
c)
Light energy
d)
Thermal energy
41.
Are the atoms more stable when they are bonded together or when they are apart? 
a)
Bonded Together
b)
Apart
42.
Ionic Bonding involves...
a)
The transfer of protons
b)
The transfer of nuetrons 
c)
The transfer of electrons
d)
None Of the above

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