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Intro To Chem Ch 7 Review
Test Description: Intro to Chem Ch 7 review
Instructions: Answer all questions to get your test result.
1) Mixtures can be separated by filtration, evaporation, or ___________.
A
pulling them apart
B
boiling
C
wishing
D
chromatography
2) ____________ is used to separate smaller things from larger things
A
Filtration
B
Evaporation
C
Chromatography
D
Waving a magic wand
3) _________ can be used to separate molecules that evaporate from molecules that don't evaporate.
A
Evaporation
B
Boiling
C
Filtration
D
Dissolvation
4) T/F Chromatography can be used to separate different colors in ink.
A
False
B
True
5) There are __________ states of matter.
A
1
B
5
C
3
D
2
6) The states of matter include:
A
liquid, gas, foam
B
solid, liquid, gas
C
solid and gas only
D
solid, liquid, paper
7) The molecules in a _____are very close together.
A
liquid
B
solid
C
gas
8) The molecules in a _____ are not packed as tightly together, allowing for some movement.
A
liquid
B
solid
C
gas
9) The molecules in a _____ are far apart and move about freely.
A
liquid
B
gas
C
solid
10) The holes in the filter which allow materials to pass through are called _______.
A
Colanders
B
Pores
C
Filtrations
D
Gases
11) A sieve or a colander can be used to _________ items from a mixture.
A
fill
B
mix
C
separate
D
recover
12) __________ cannot be used to separate items of the same size.
A
Liquefaction
B
Evaporation
C
Smashing atoms
D
Filtration
13) This name is given to any substance in which another substance is dissolved.
A
Titration
B
Filter
C
Solid
D
Solvent
14) This is used to separate mixtures by passing a solution over a solid film or powder.
A
Chromatography
B
Inkinism
C
Filtration
D
Separation
15) _____ occurs when a liquid turns into a gas and escapes into the air.
A
Separation
B
Evaporation
C
Filtration
D
Evacuation
16) ______ can be used to separate two or more items of different sizes.
A
Solvent
B
Filtration
C
Liquefication
D
Chromatography
17) In chromatography, ink colors separate, with the fastest moving dyes appearing at the ________ of the test strip.
A
bottom
B
they remain in the ink solution in the beaker
C
top
D
middle
18) When molecules exist in the gaseous state, they _______.
A
move faster
B
move slower
C
move up and down
D
don't move
19) Molecules in a solid state ______.
A
do not move freely
B
move up and down slowly
C
remain solid
D
move freely
20) A separation method to separate sand from rocks could be.
A
hybridization
B
evaporation
C
filtration
*select an answer for all questions
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