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Chapter 7 vocabulary
Terms in this set (27)
Anything that has mass and takes up space.
The study of matter and how matter changes.
A single kind of matter that is pure, meaning it always has a specific makeup, or composition.
A substance that cannot be broken down into any other substances by chemical or physical means.
The basic particle from which all elements are made.
The force of attraction between two atoms.
A group of two or more atoms held together by chemical bonds.
A substance made of two or more elements that are chemically combined in a set ratio.
A compound is represented by a _________________________which shows the elements in the compound and the ratio of atoms.
Two or more substances that are together in the same place, but their atoms are not chemically bonded.
A state of matter that has a definite shape and a definite volume.
A state of matter that has a constant volume but no shape of its own.
A substance that flows - includes both gases and liquids
A state of matter that has no definite shape or volume.
The force of the outward push divided by the area of the wall of the container.
The average kinetic energy of the particles in a substance.
The transfer of thermal energy from a warmer object to a cooler object.
A characteristic of a substance that can be observed without changing it into another substance.
The change in state from a solid to a liquid.
The specific temperature at which melting occurs.
The change in state from a liquid to a solid.
The change in state from a liquid to a gas.
Vaporization that only takes place on the surface of a liquid.
Vaporization that takes place both below and at the surface of a liquid.
The temperature at which a liquid boils.
The change in state from a gas to a liquid.
Occurs when the surface particles of a solid gain enough energy that they form a gas.
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