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WorksheetsPhysical Science Chapter 2
Total questions: 26
Worksheet time: 13mins
Name
Class
Date
1.
Which of the following are pure substances?
a)
solutions
b)
compounds
c)
homogeneous mixtures
d)
heterogeneous mixtures
2.
Which of the following is NOT a pure substance?
a)
milk
b)
oxygen
c)
sugar
d)
water
3.
A substance that is made up of only one kind of atom is a(an)
a)
mixture
b)
element
c)
compound
d)
solution
4.
If an unknown substance CANNOT be broken down into simpler substances, it is
a)
made of one kind of atom
b)
a compound
c)
an element
d)
both a and c
5.
Which of the following is a characteristic of a mixture?
a)
contains only pure substances
b)
has a fixed composition
c)
contains only elements
d)
has varying properties
6.
A mixture that appears to contain only one substance is a(an)
a)
suspension
b)
compound
c)
homogeneous mixture
d)
heterogeneous mixture
7.
A mixture can be classified as a solution, suspension, or colloid based on the
a)
color of its particles.
b)
number of particles it contains.
c)
size of its largest particles.
8.
You are about to open a container of soy milk but notice that there are instructions to "shake well before serving". The soy milk is most likely a
a)
colloid
b)
solution
c)
element
d)
suspension
9.
Which of the following is malleable?
a)
pottery
b)
marble
c)
gold
d)
glass
10.
Which of the following has the highest viscosity?
a)
lemonade
b)
corn syrup
c)
water
d)
milk
11.
A substance has a melting point of 0° C and a boiling point of 100° C. The substance is most likely
a)
oxygen
b)
hydrogen
c)
water
d)
gold
12.
Which of the following materials is useful for making molds because it has a low melting point?
a)
wax
b)
water
c)
metal
d)
clay
13.
Filtration can be used to separate mixtures based on
a)
the size of their particles
b)
their boiling points
c)
their densities
d)
their melting points
14.
When a physical change in a sample occurs, which of the following does NOT change?
a)
composition
b)
size
c)
shape
d)
temperature
15.
Flammability is a material�s ability to burn in the presence of
a)
hydrogen
b)
oxygen
c)
nitrogen
d)
water
16.
A substance that has high reactivity
a)
burns in the presence of water
b)
displaces dissolved oxygen
c)
easily combines chemically with other substances.
17.
Which of the following is NOT a clue that a chemical change has occurred?
a)
change in color
b)
production of a gas
c)
precipitate forms
d)
change in shape
18.
Which of the following is a chemical change?
a)
ice melting
b)
water breaking down into hydrogen and oxygen
c)
water boiling
d)
slicing a tomato
19.
Name the two pure substances.
a)
homogeneous and heterogeneous
b)
compounds and mixtures
c)
elements and compounds
d)
atoms and compounds
20.
An element has a fixed composition because it contains only one type of _________________.
a)
atom
b)
composition
c)
mixture
d)
element
21.
The substances in a(an) ____________________ mixture are evenly distributed throughout the mixture.
a)
homogeneousheterogeneous
b)
compound
c)
heterogeneous
d)
element
22.
In a(an) ____________________ mixture, the parts of the mixture are noticeably different from one another.
a)
homogeneousheterogeneous
b)
compound
c)
heterogeneous
d)
element
23.
Measuring ____________________ can be used to test the purity of some substances.
a)
melting point
b)
boiling point
c)
density
d)
elements
24.
____________________ is a process that could be used to separate dissolved particles from the liquid in a solution.
a)
Filtration
b)
Separation
c)
Distillation
d)
Mixation
25.
Rust forms because iron and oxygen are highly ____________________ elements.
a)
formative
b)
reactive
c)
explosive
d)
creative
26.
A solid that forms and separates from a liquid mixture is a(an) ____________________.
a)
distillate
b)
filtrate
c)
precipitate
d)
element
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