WorksheetsInteractions of Matter Test
Total questions: 31
Worksheet time: 17mins
Name
Class
Date
1.
A combination of symbols that show the ratio of elements in a compound is called ______________________.
a)
chemical equation
b)
chemical symbol
c)
chemical formula
2.
Substances that are present after a chemical reaction are ________________________.
a)
products
b)
reactants
c)
subscripts
3.
A reaction that absorbs energy in the form of heat is called an ________________________________.
a)
exothermic reaction
b)
physical reaction
c)
endothermic reaction
4.
A reaction that releases energy in the form of heat is called an _______________________________.
a)
exothermic reaction
b)
physical reaction
c)
endothermic reaction
5.
Principle that states that matter is not created or destroyed during a chemical reaction is ___________________________________.
a)
the 1st Law of conservation
b)
the 3rd law of conservation
c)
the law of conservation of mass
6.
Substances that are present before a chemical reaction are ______________________________.
a)
products
b)
precipitates
c)
reactants
7.
One or two letters used to represent an element is called a __________________________________.
a)
Chemical equation
b)
Chemical formula
c)
Chemical symbol
8.
The number telling how many atoms are in a molecule or the ratio of elements in a compound is a ____________________. They are smaller and go behind the molecule.
a)
subscript
b)
coefficient
c)
formula
9.
_______________________ use symbols and formulas to show chemical reactions.
a)
chemical reactions
b)
chemical change
c)
chemical equations
10.
A change in matter that produces a new substance is called a _______________________.
a)
chemical change
b)
physical change
c)
chemical reaction
11.
Number telling how many molecules of a substance are involved in a chemical reaction is a ____________________. They are in front of the molecule.
a)
subscript
b)
coefficient
c)
formula
12.
A solid that forms from a solution during a chemical reaction is called a _______________________.
a)
subscript
b)
product
c)
precipitate
13.
Which of the following statements is true about a balanced chemical equation?
a)
Reactants are on the right.
b)
Subscripts can be changed.
c)
Products are on the left.
d)
The total number of atoms are equal on both sides.
14.
In a chemical equation, the arrow stands for __________________.
a)
equals
b)
yields
c)
makes
15.
A ____________________________ is a change in a substance that does not change its identity.
a)
chemical change
b)
physical change
c)
endothermic change
16.
A ____________________________ is a change in which one or more substances combine or break apart to form new substances.
a)
chemical reaction
b)
physical reaction
c)
exothermic reaction
17.
During a chemical change, atoms are lost or gained to make the new substances.
a)
true
b)
false
18.
All physical and chemical changes in matter include a change in energy.
a)
true
b)
false
19.
______________ are the regular sized numbers in front of a chemical formula.
a)
subscripts
b)
reactants
c)
products
d)
coefficients
20.
The little numbers that you see after some elements are called _____________.
a)
subscripts
b)
reactants
c)
products
d)
coefficients
21.
To balance an equation, you must adjust the ____________ until there are the same number of each type of atom on both sides.
a)
coefficients
b)
products
c)
reactants
d)
subscripts
22.
The type of vaporization that takes place below the surface of a liquid is called ______________________.
a)
evaporation
b)
boiling
c)
melting
23.
The type of vaporization that takes place on the surface of a liquid is called _______________________________.
a)
boiling
b)
condensation
c)
evaporation
24.
The opposite of vaporization is ________________________, and they happen at the same temperature.
a)
condensation
b)
boiling
c)
sublimation
25.
The opposite of melting is ________________________, and they happen at the same temperature.
a)
boiling
b)
freezing
c)
deposition
26.
When a solid turns directly into a gas, this is called _______________________________.
a)
deposition
b)
sublimation
c)
condensation
27.
When a gas turns directly into a solid, this is called _______________________________.
a)
depostition
b)
condensation
c)
sublimation
28.
Check all common physical changes.
a)
change in state
b)
boiling
c)
change in size
d)
change in color
29.
Check all common physical changes.
a)
change in volume
b)
ordor change
c)
melting
d)
boiling
30.
Check all that is evidence of a chemical change.
a)
change in state
b)
change in color
c)
formation of bubbles
d)
temperature change
31.
Check all that is evidence of a chemical change.
a)
formation of a precipitate
b)
melting
c)
formation of a gas
d)
ordor change
100 %
