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10 Terms
1
What are the states of matter?
The states of matter are solid, liquid, gas, and plasma.
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2
What defines an element?
An element is a pure substance that cannot be broken down into simpler substances by chemical means.
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3
What is a compound?
A compound is a substance formed when two or more elements are chemically bonded together.
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4
What is a mixture?
A mixture is a combination of two or more substances that are not chemically bonded.
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5
What happens during a change of state?
A change of state occurs when matter transitions from one state to another, such as from solid to liquid (melting) or from liquid to gas (evaporation).
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6
What is pure matter?
Pure matter consists of a single component with constant composition and properties.
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7
What is impure matter?
Impure matter is composed of two or more components that can vary in composition.
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8
What is the heating curve?
The heating curve is a graph that shows the change in temperature of a substance as heat is added over time.
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9
What is the cooling curve?
The cooling curve is a graph that shows the change in temperature of a substance as it releases heat over time.
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10
How do heating and cooling curves relate to changes of state?
Heating and cooling curves visually represent the temperatures at which substances change states, such as melting and boiling points.
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