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12 questions
A ______ contains some particles that are intermediate in size between small and large particles in a solution.
solution
colloid
suspension
element
When substances dissolve and form a homogeneous mixture it forms a __________.
colloid
solution
suspension
element
A heterogeneous mixture that separates into layers over time is called a __________.
solution
suspension
colloid
pure substance
There are two types of mixtures, homogeneous and ___________.
heterogeneous
suspension
colloid
pure substance
A substance that is made from 2 or more simpler substances and can be broken down into those simpler substances are
pure substances
compounds
elements
solutions
A substance that cannot be broken down into simpler substances is
element
solution
compound
mixture
Matter that ALWAYS has the exact same composition is
pure substance
homogeneous mixture
heterogeneous mixture
solution
A substance has a melting point of 0 C and a boiling point of 100 C. The substance is most likely
water
hydrogen
gold
table salt
Which is NOT the following characteristic of a chemical change?
production of a gas
formation of a precipitate
color change
density
How do the properties of a compound compare to the properties of the elements it contains?
They are both considered the same.
They are different.
One is pure and the other not pure.
How is the composition of a substance different from the composition of a mixture?
A substance is fixed.
A substance is fixed, while a mixture can vary.
Neither, they are both the same.
How is a chemical change different from a physical change?
They are both the same.
Chemical change involves a change in composition of matter, physical change does not change.
There is no difference.
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