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Phy Sci Ch 2 Part 1
Test Description: Phys Sci Ch 2 Part 1
Instructions: Answer all questions to get your test result.
1) Which of the following are pure substances?
A
homogeneous mixtures
B
colloids
C
solutions
D
compounds
2) Which of the following is NOT a pure substance?
A
carbon dioxide
B
milk
C
water
D
oxygen
3) A substance that is made up of only 1 kind of atom is a(n)
A
element
B
solution
C
homogeneous mixture
D
compound
4) If an unknown substance CANNOT be broken down into simpler substances, it is
A
an element
B
both element and made of one kind of atom
C
a compound
D
made of one kind of atom
5) If a material contains three elements joined in a fixed proportion, it is a(n)
A
atom
B
solution
C
mixture
D
compound
6) Water is a compound because it
A
always has 2 H atoms for each O atom
B
both - can be broken down into simpler substances and has 2 H and 1 O
C
is made of water atoms joined together
D
can be broken down into simpler substances
7) Which of the following is a characteristic of a mixture?
A
contains only pure substances
B
has a fixed composition
C
both - has varying properties and has a fixed composition
D
has varying properties
8) Which of the following is a heterogeneous mixture?
A
a jar of mixed nuts
B
water in a swimming pool
C
sugar water
D
stainless steel
9) A mixture can be classified as a solution, suspension, or colloid based on the
A
size of its largest particles
B
size of its smaller
C
color of its particles
D
number of particles it contains
10) Which of the following is malleable?
A
gold
B
pottery
C
ice
D
glass
11) Which of the following has the highest viscosity?
A
corn syrup
B
milk
C
orange juice
D
water
12) A substance has a melting point of 0 C and a boiling point of 100 C, The substance is most likely
A
table salt
B
hydrogen
C
gold
D
water
13) A material that is malleable and conducts electricity is most likely
A
wood
B
ice
C
a metal
D
motor oil
14) What physical properties of nylon and leather make them good materials to use for shoelaces?
A
hardness and flexibility
B
durabilitiy and flexibility
C
high density and low conductivity
D
low viscosity and flexibility
15) Which of the following materials is useful for making molds because it has a low melting point?
A
wood
B
clay
C
wax
D
metal
16) Filtration can be used to separate mixtures based on
A
their densities
B
the size of their particles
C
their boiling points
D
their melting points
17) What method can be used to separate parts of a liquid mixture when the entire mixture can pass through a filter?
A
screening
B
straining
C
distillation
D
filtration
18) When a physical change in a sample occurs, which of the following does NOT change?
A
shape
B
composition
C
temperature
D
volume
19) Which of the following is a physical change?
A
sawing a piece of wood in half
B
burning a piece of wood
C
a copper roof changing color from red to green
D
rust forming on an iron fence
20) Flammability is a material's ability to burn in the presence of
A
hydrogen
B
nitrogen
C
carbon dioxide
D
oxygen
*select an answer for all questions
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