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