Intro To Chem Ch 7 Review: Question Preview (ID: 24101)

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When molecules exist in the gaseous state, they _______.
a) move slower
b) move faster
c) don't move
d) move up and down

In chromatography, ink colors separate, with the fastest moving dyes appearing at the ________ of the test strip.
a) bottom
b) middle
c) top
d) they remain in the ink solution in the beaker

______ can be used to separate two or more items of different sizes.
a) Liquefication
b) Filtration
c) Chromatography
d) Solvent

_____ occurs when a liquid turns into a gas and escapes into the air.
a) Filtration
b) Evacuation
c) Evaporation
d) Separation

This is used to separate mixtures by passing a solution over a solid film or powder.
a) Inkinism
b) Chromatography
c) Filtration
d) Separation

This name is given to any substance in which another substance is dissolved.
a) Titration
b) Solid
c) Filter
d) Solvent

A sieve or a colander can be used to _________ items from a mixture.
a) mix
b) separate
c) fill
d) recover

__________ cannot be used to separate items of the same size.
a) Evaporation
b) Liquefaction
c) Filtration
d) Smashing atoms

The holes in the filter which allow materials to pass through are called _______.
a) Filtrations
b) Pores
c) Colanders
d) Gases

The molecules in a _____ are far apart and move about freely.
a) gas
b) solid
c) liquid

The molecules in a _____ are not packed as tightly together, allowing for some movement.
a) gas
b) liquid
c) solid

The molecules in a _____are very close together.
a) liquid
b) gas
c) solid

There are __________ states of matter.
a) 1
b) 2
c) 3
d) 5

The states of matter include:
a) solid, liquid, paper
b) liquid, gas, foam
c) solid, liquid, gas
d) solid and gas only

T/F Chromatography can be used to separate different colors in ink.
a) True
b) False

_________ can be used to separate molecules that evaporate from molecules that don't evaporate.
a) Evaporation
b) Boiling
c) Filtration
d) Dissolvation

____________ is used to separate smaller things from larger things
a) Evaporation
b) Chromatography
c) Filtration
d) Waving a magic wand

Mixtures can be separated by filtration, evaporation, or ___________.
a) pulling them apart
b) chromatography
c) wishing
d) boiling

Molecules in a solid state ______.
a) do not move freely
b) move freely
c) move up and down slowly
d) remain solid

A separation method to separate sand from rocks could be.
a) filtration
b) evaporation
c) hybridization

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