Unit 2

Freezing Point

• 6.6B- investigate the physical properties of matter to distinguish between pure substances, homogeneous mixtures (solutions), and heterogeneous mixtures

• 6.6D- compare the density of substances relative to various fluids

Physical Property

Magnetism

Electrical Conductivity

Melting Point

Volume

Unit 2

Atom

Boiling Point

Chemical Formula

Color

Compound

Density

Element

Heterogeneous Mixture

Homogeneous Mixture

Mixture

Meniscus

Pure Substance

Displacement

Fluid

Mass

Electrical Conductivity

is a measure of how easily electricity can pass through a substance.

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Magnetism

is a measure of how attracted a substance is to a magnet

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Meniscus

The upward curve at the surface of a liquid

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Atom

The basic particle from which all elements are made; the smallest particle of an element that has the properties of that element

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Density

is a measure of how easily electricity can pass through a substance.

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Physical Property

is a characteristic of a substance that can be observed or measured without changing the identity of the substance.

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Boiling Point

is the temperature at which a substance changes from liquid to gas

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Element

A substance that contains one kind of atom and cannot be broken down into a simpler form

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Pure Substance

consists of just one type of particle and has the same physical properties throughout Ex) Elements and Compounds

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Heterogeneous Mixture

A mixture that is not the same throughout.

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Displacement

A way to measure the volume of a solid by placing it in a known amount of liquid

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Color

is determined by what colors of light are reflected by a substance. If light just passes through the substance, the substance may lack color.

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Homogeneous Mixture

A mixture that is the same throughout.

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Fluid

A substance that has no fixed shape and is able to flow easily; a gas or a liquid

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Compound

A substance made of two or more elements chemically combined in a specific ratio or proportion

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Mixture

is made of two or more substances that are combined but whose atoms are not chemically bonded. The substances that make up the mixture keep their own physical properties

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Mass

Amount of matter a body contains

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Melting Point

is the temperature at which a substance changes from solid to liquid.

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Freezing Point

the temperature at which a liquid turns into a solid when cooled.

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Volume

the amount of space that a substance or object occupies

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Chemical Formula

A shorthand notation that uses chemical symbols and numbers as subscripts to represent the type of atoms and number of atoms that are present in the smallest unit of the substance.

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