WorksheetsFoundations of Chemistry
Total questions: 32
Worksheet time: 16mins
Name
Class
Date
1.
Weight and mass are the same thing.
a)
true
b)
false
2.
Compounds cannot be broken down by any means.
a)
true
b)
false
3.
Compounds can be broken down only by chemical means.
a)
true
b)
false
4.
Which of the following statements is true about an object's weight but NOT about its mass?
a)
It may vary depending on the object's location.
b)
It is a measure of the amount of matter in the object.
c)
It is measured in kilograms or grams.
d)
It would be the same on the moon as it is on Earth.
5.
Which of the following is NOT an example of a physical change?
a)
the shaping of a gold bar
b)
the melting of a popsicle
c)
the explosion of fireworks
d)
the sanding of a piece of wood
6.
What kinds of changes in substances are always physical changes?
a)
changes of state from solid to liquid to gas and back
b)
changes that result in new substances being formed
c)
changes that change the identity of the substance
d)
changes that change the density of the substances
7.
Why are chemical properties harder to observe than physical properties?
a)
chemical properties change the substance's identity
b)
chemical properties depend on the size of the sample
c)
physical properties can be observed and measured
d)
physical properties change the identity of a substance
8.
What is the best way to tell if a chemical change has taken place?
a)
the matter changes color
b)
the change is reversible
c)
a mixture separates into layers
d)
a composition changes
9.
Which of the following is NOT the result of a chemical change?
a)
soured milk
b)
rusted metal
c)
ground flour
d)
digested food
10.
Which of the following is a chemical property of matter?
a)
solubility
b)
volume
c)
density
d)
reactivity
11.
What makes characteristic properties useful to scientists?
a)
they can be either physical or chemical
b)
they can be used to identify matter
c)
they are easy to observe and measure
d)
sample size does not matter
12.
How does a physical change differ from a chemical change?
a)
in a physical change new volumes are created
b)
in a physical change new materials are produced
c)
in a physical change the composition is unchanged
d)
in a physical change the change is reversible
13.
Melting crayons is an example of a
a)
physical property
b)
physical change
c)
chemical property
d)
chemical change
14.
Which of the following events is NOT a common sign that a chemical change has taken place?
a)
change in color or odor
b)
change in state
c)
foaming or bubbling
d)
production of heat or light
15.
What chemical property is responsible for iron rusting?
a)
flammability
b)
conductivity
c)
nonflammability
d)
reactivity to oxygen
16.
During physical changes, matter always retains its
a)
size
b)
identity
c)
state
d)
texture
17.
What has mass and takes up space?
a)
weight
b)
volume
c)
space
d)
matter
18.
What units would you use to measure liquid volume in experiment?
a)
grams or kilograms
b)
meters or centimeters
c)
newtons
d)
liters or milliliters
19.
Which of these phrases describes the results of a chemical change?
a)
gold nuggets not burning
b)
reactivity with oxygen
c)
charred wood, ash, and smoke
d)
a bent auto fender
20.
Why is freezing water to make ice considered a physical change?
a)
the ice has some new properties
b)
the ice floats on water
c)
the water changes its state
d)
the water changes its identity
21.
Why would dissolving salt in water be considered a physical change?
a)
the salt disappears forever
b)
the water tastes salty
c)
the salt changes its state
d)
the salt returns if the mixture is heated
22.
What happens to matter during chemical changes?
a)
it retains its identity
b)
its composition changes
c)
the state of matter changes
d)
only the form of the matter changes
23.
What makes chemical properties so difficult to observe?
a)
its composition changes
b)
it combines ad forms new substances
c)
wearing protective glasses is required
d)
they happen too quickly
24.
What happens to matter during a physical change?
a)
its composition changes
b)
it combines and forms new substances
c)
its mass and density may change
d)
it keeps its identity
25.
The reverse of condensation is
a)
boiling
b)
evaporation
c)
freezing
d)
sublimation
26.
Boiling point, melting point, and density are some of an element's
a)
nonreactive properties
b)
physical properties
c)
chemical properties
d)
pure properties
27.
What is a pure substance made of two or more elements that are chemically combined?
a)
element
b)
compound
c)
mixture
d)
solution
28.
If a spoonful of salt is mixed in a glass of water, what is the water called?
a)
solute
b)
solution
c)
solvent
d)
element
29.
What is formed when particles of two or more substances are distributed evenly among each other?
a)
compound
b)
suspension
c)
solution
d)
element
30.
How could a sugar cube be dissolved more quickly in water?
a)
cool the water
b)
crush the sugar
c)
let the cube sit in the water
d)
add more water
31.
What pure substance forms when two elements chemically combine?
a)
an element
b)
a compound
c)
a mixture
d)
a solution
32.
Why can salt dissolve in water?
a)
salt is the solvent
b)
salt is a solution
c)
salt is soluble
d)
salt is an element
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