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