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15 Cards in this Set
- Front
- Back
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A substance having atoms of more than one element that are combined chemically is called a _________.
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molecule
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A ________ describes a substance by itself.
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physical property
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A ________ results in a new substance.
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chemical change
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A ________ describes how a substance reacts with other substances.
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chemical property
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The process of melting or freezing is called _______.
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change of state
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The _______ states that the mass of substances before and after a chemical reaction will be equal.
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law of conservation of mass
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A particle made of two or more atoms is called a _______.
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compound
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A substance having just one kind of atom is called an ______.
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element
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The smallest possible particle of matter is called an ______.
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atom
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A _______ does not result in a new substance.
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physical change
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What is all matter made of? a. atoms b. oxygen c. water d. wood
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atoms
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Which statement about atoms is true? a. They are all the same b. All substances are made of just one kind c. You can see them with your eyes d. They are too small to be seen with an ordinary microscope
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They are too small to be seen with an ordinary microscope.
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The diagrams show iron, oxygen, carbon dioxide, and hydrogen. Which of these is a compound? a. iron b. oxygen c. carbon dioxide d. hydrogen
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carbon dioxide
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What kind of change is grinding chalk into powder? a. chemical b. mixture c. physical d. reaction
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physical
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How are physical properties and chemical properties similar?
a. they both describe how one substance reacts with another b. They both describe a substance c. they both describe the size of a substance d. They both describe a substance by itself |
They both describe a substance.
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