8.P.1.1 Question Preview (ID: 48911)
Matter.
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What is the smallest unit of an element?
a) atom
b) crystal
c) proton
d) molecule
Which is one characteristic of some pure substances?
a) They can be homogeneous or heterogeneous.
b) They cannot be physically separated
c) They contain different types of molecules.
d)
Which best describes an element?
a) It is composed of more than one type of atom.
b) It can be broken down into simpler mixtures.
c) It can be changed into a compound.
d) It is the simplest form of matter.
Which is the best description of one particle of table salt? (NaCl)
a) element
b) compound
c) mixture
d)
When elements chemically combine, what do they form?
a) atoms
b) compounds
c) electroms
d) mixture
A substance contains 2 components joined by physical means. What best describes the substance?
a) element
b) compound
c) mixture
d) electron
An example of a homogeneous mixture is?
a) salt water
b) trail mix
c) granite
d) gold
An example of a heterogeneous mixture is?
a) tossed salad
b) gold
c) salt water
d) milk
Which is an example of an element?
a) gold
b) air
c) salt
d) salt water
Which is a pure substance
a) element
b) compound
c) mixture
d) element and compound
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