WorksheetsBenchmark 2 Review
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
Which most likely indicates formation of a precipitate during the reaction of two liquids?
a)
the liquids changing colors
b)
a solid appearing in the liquid
c)
gas bubbles appearing in the liquid
d)
the temperature of the liquids changing
2.
In a chemical reaction, what is the best description of a molecule’s movement when the temperature decreases?
a)
movement decreases
b)
movement increases
c)
movement stays the same
d)
movement stops
3.
Which chemical change is most likely to involve bubbling or an odor?
a)
color change
b)
gas production
c)
precipitate formation
d)
temperature decrease
4.
Which best describes a solid produced in a solution during a chemical reaction?
a)
acid
b)
solute
c)
reactant
d)
precipitate
5.
Which is the best evidence that the creation of a precipitate is the result of a chemical reaction?
a)
demonstrates a new substance has formed
b)
demonstrates a temperature change
c)
demonstrates gas production
d)
It begins to rain inside
6.
Which of these is not an example of a physical change of state?
a)
boiling
b)
stirring
c)
freezing
d)
evaporating
7.
Which best describes a substance that changes from a liquid to a solid?
a)
The substance gains mass.
b)
The substance gains volume.
c)
The substance undergoes a physical change.
d)
The substance undergoes a chemical change.
8.
Two clear solutions are mixed together in a beaker. Which result would indicate a chemical reaction had occurred between these solutions?
a)
increase of volume in the beaker
b)
decrease of volume in the beaker
c)
increase in temperature of the beaker
d)
They become frozen
9.
. Liquids placed in a beaker will settle in specific layers. Which physical property of matter does this illustrate?
a)
density
b)
polarity
c)
solubility
d)
malleability
10.
Which indicates a chemical reaction is occurring?
a)
a substance melting
b)
a substance evaporating
c)
bubbles forming when two substances are mixed
d)
temperature remaining the same when two substances are mixed
11.
Which action results in a chemical change?
a)
apples being cut into slices
b)
wood burning in a fireplace
c)
wet clothes drying on a clothesline
d)
snow being shoveled off of a sidewalk
12.
A group of students observed the formation of bubbles when water boiled. What happened to matter because of the physical change to the water?
a)
New matter was created in the bubbles.
b)
Old matter was destroyed as the water turned to gas.
c)
Matter was conserved when it changed form.
d)
The composition of the matter changed.
13.
Max combines baking soda and vinegar in a flask. Which is the most likely reason Max should place a balloon over the mouth of the flask before he mixes the two substances?
a)
to prevent any gas formed as a product from escaping during the reaction
b)
to prevent any liquid used as a reactant from escaping during the reaction
c)
to prevent any powder used as a reactant from escaping during the reaction
d)
to prevent any liquid formed as a product from escaping during the reaction
14.
Which is an example of a physical change?
a)
ice melting
b)
nail rusting
c)
bread baking
d)
wood burning
15.
An antacid tablet reacts in water, creating bubbles. Which best describes the products of the reaction?
a)
a clear gas
b)
a clear liquid
c)
a white solid
d)
a clear liquid and clear gas
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