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