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