UHC CERTIFICATION ACTUAL EXAM
TEST QUESTIONS WITH ANSWERS
GRADED A PLUS
>> Element
Answer: only one type of atom.
>> compound
Answer: 2 or more elements chemically bonded
>> homogeneous mixture
Answer: evenly mixed
>> heterogeneous mixture
Answer: unevenly mixed
>> Fluorine gas, a substance that only contains fluorine atoms.
Answer: Element
>> Carbon monoxide, a substance containing carbon and oxygen atoms in a fixed 1:1 ratio.
Answer: Compound
>> Earth’s atmosphere, which contains about 78% nitrogen, 21% oxygen, and small amounts of other
gases.
Answer: Homogeneous Mixture
>> Homogeneous mixtures have uniform properties throughout.
Answer: True
>> Heterogeneous mixtures contain more than one part, each part has its own properties.
Answer: True
>> Pure substances only contain one type of substance and nothing else.
Answer: True
>> Components of a homogeneous mixture are visibly distinct.
Answer: False
>> The components of homogeneous and heterogeneous mixtures cannot be separated.
TEST QUESTIONS WITH ANSWERS
GRADED A PLUS
>> Element
Answer: only one type of atom.
>> compound
Answer: 2 or more elements chemically bonded
>> homogeneous mixture
Answer: evenly mixed
>> heterogeneous mixture
Answer: unevenly mixed
>> Fluorine gas, a substance that only contains fluorine atoms.
Answer: Element
>> Carbon monoxide, a substance containing carbon and oxygen atoms in a fixed 1:1 ratio.
Answer: Compound
>> Earth’s atmosphere, which contains about 78% nitrogen, 21% oxygen, and small amounts of other
gases.
Answer: Homogeneous Mixture
>> Homogeneous mixtures have uniform properties throughout.
Answer: True
>> Heterogeneous mixtures contain more than one part, each part has its own properties.
Answer: True
>> Pure substances only contain one type of substance and nothing else.
Answer: True
>> Components of a homogeneous mixture are visibly distinct.
Answer: False
>> The components of homogeneous and heterogeneous mixtures cannot be separated.
