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Chemistry: Unit 2 > Chemistry: Unit 2 > Flashcards

Chemistry: Unit 2 Flashcards

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1
Q

Chemistry

A

the science that deals with the composition and properties of substances and various elementary forms of matter.

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2
Q

Matter

A

Matter is defined as anything that has mass and takes up space

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3
Q

Extensive Properties

A

a physical property of a system that does not depend on the system size or the amount of material in the system

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4
Q

Intensive Properties

A

density and color, do not depend on the amount of matter.

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5
Q

Mass

A

A measure of how much matter is in an object.

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6
Q

Volume

A

he volume of an object is a measure of the amount of space occupied by that object

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7
Q

Physical Property

A

hat do change the chemical nature of matter.

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8
Q

Physical Change

A

a change in which no new substances are formed

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9
Q

Chemical Property

A

characteristic of a substance that is observed during a reaction in which the chemical composition or identity of the substance is changed

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10
Q

Chemical Change

A

irreversible chemical reaction involving the rearrangement of the atoms of one or more substances and a change in their chemical properties or composition

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11
Q

Phase (Phase of Matter)

A

The states in which matter can exist: as a solid, liquid, or gas.

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12
Q

Solid

A

The molecules in solids are closely bound together, they can only vibrate.

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13
Q

Liquid

A

. A phase of matter in which atoms or molecules can move freely while remaining in contact with one another

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14
Q

Gas

A

a substance (such as oxygen or hydrogen) that is like air and has no fixed shape

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15
Q

Freezing

A

he process when a liquid turns into a solid

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16
Q

Melting

A

to change or to cause (something) to change from a solid to a liquid

17
Q

Vaporization

A

physics and chemistry, the conversion of a solid or a liquid into a gas.

18
Q

Condensation

A

the process by which water vapor in the air is changed into liquid water

19
Q

Sublimation

A

When anything solid turns into a gas without first becoming liquid, that’s sublimation.

20
Q

Deposition

A

the process by which rocks, sand and sediment are deposited by the forces of erosion

21
Q

Substance (Pure Substance)

A

The pure substance within chemistry is a very simple concept to grasp

22
Q

Element

A

A substance that cannot be broken down into simpler substances by chemical means.

23
Q

Chemical Symbol

A

an abbreviation or short representation of a chemical element; the symbols in the periodic table.

24
Q

Compound

A

The type of bonds holding elements together in a compound can vary: two common types are covalent bonds and ionic bonds.

25
Q

Mixture

A

a mixture is a material made up of two or more different substances which are mixed but are not combined chemically.

26
Q

Homogeneous Mixture

A

A solution is a mixture where one of the substances dissolves in the other.

27
Q

Solution

A

A solution is a homogeneous mixture of two or more substances.

28
Q

Heterogeneous Mixture

A

A mixture is a combination of two or more pure substances in which the original substances retain their chemical properties.

29
Q

Filtration

A

is any of various mechanical, physical or biological operations that separate solids from fluids (liquids or gases) by adding a medium through which only the fluid can pass.

30
Q

Distillation

A

Distillation

31
Q

Chemical Reaction

A

A process in which atoms of the same or different elements rearrange themselves to form a new substance

32
Q

Reactant

A

a substance that enters into and is altered in the course of a chemical reaction.

33
Q

Product

A

Products are the species formed from chemical reactions

34
Q

Precipitate

A

precipitate is an insoluble solid that emerges from a liquid solution. The emergence of the insoluble solid from solution is called precipitation.

35
Q

Law of Conservation of Mass

A

states that mass can neither be created nor destroyed in a chemical reaction.

Chemistry: Unit 2 (1 decks)

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