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Which of the following does not describe a pure substance?
mixture
They can be a mixture.
element
(D) Both A and B.
pure substance
atoms
molecule
(D) All three~ A, B, and C.
either a single element or a single compound, that has definite chemical and physical properties
mixture
They can be a mixture.
element
(D) Both A and B.
pure substance
atoms
molecule
(D) All three~ A, B, and C.
What happens when a pure substance undergoes a chemical change?
mixture
They can be a mixture.
element
(D) Both A and B.
pure substance
atoms
molecule
(D) All three~ A, B, and C.
a particle made up of two or more atoms that are chemically joined; the smallest unit of a compound that keeps all the properties of that compound
mixture
They can be a mixture.
element
(D) Both A and B.
pure substance
atoms
molecule
(D) All three~ A, B, and C.
the basic building blocks of matter; the smallest unit of an element that maintains the properties of that element
mixture
They can be a mixture.
element
(D) Both A and B.
pure substance
atoms
molecule
(D) All three~ A, B, and C.
How can elements be classified?
mixture
They can be a mixture.
element
(D) Both A and B.
pure substance
atoms
molecule
(D) All three~ A, B, and C.
a combination of two or more substances or a variety of elements and compounds that are not chemically combined
mixture
They can be a mixture.
element
(D) Both A and B.
pure substance
atoms
molecule
(D) All three~ A, B, and C.
a pure substance made up of one type of atom; a substance that cannot be broken down into simpler materials
mixture
They can be a mixture.
element
(D) Both A and B.
pure substance
atoms
molecule
(D) All three~ A, B, and C.
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