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Physical Science > Chapter 2 Matter > Flashcards

Chapter 2 Matter Flashcards

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1
Q

Chemistry

A

Chemistry is the study of matter and the changes it undergoes.

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2
Q

Matter

A

Matter is something that has mass and takes up space.

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3
Q

Element

A

Element is a substance that can not be broken down.

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4
Q

Atom

A

An atom is the smallest unit of matter.

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5
Q

Compound

A

A compound is a substance made of two chemically combined atoms.

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6
Q

Molecules

A

Molecules are are the smallest units of a substance that stay the same physically and chemically.

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7
Q

Chemical formula

A

A chemical formula is the mixture of symbols and numbers that represent a substance.

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8
Q

Pure substance

A

A pure substance is an element or compound that has definite chemical and physical properties to it.

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9
Q

Mixture

A

A mixture is the mixing of two substances without chemically mixing them.

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10
Q

Heterogeneous mixtures

A

Heterogeneous mixtures are when the substances weren’t evenly distributed.

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11
Q

Homogeneous mixture

A

A homogeneous mixture is when the substances are evenly distributed.

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12
Q

Miscible

A

Miscible substances can be mixed

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13
Q

Immiscible

A

Immiscible mixtures can not be mixed

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14
Q

Melting point

A

The pressure and temperature, where a solid becomes a liquid.

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15
Q

Boiling point

A

The pressure and temperature at which liquids become gases.

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16
Q

State

A

The physical form of a substance. Such as a solid, liquid, and gas.

17
Q

Density

A

Density is the ratio of the mass of a substance to the volume of the substance.

18
Q

Physical change

A

A change where the substance changes in looks, shape, or form, but does not change in chemical properties.

19
Q

Chemical change

A

Chemical change is when a substance changes its chemical properties by firming into a new substance.

20
Q

Reactivity

A

Reactivity is when one substance is able to react with another substance

21
Q

Flammability

A

Flammability is when a substance is able to react with oxygen and burn when exposed to a flame.

Physical Science (11 decks)

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