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