Sarah Flashcards

Chemistry chapter 2 key terms

1
Q

Matter

A

The material of the universe

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2
Q

Atom

A

The fundamental unit of which elements are confused

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3
Q

Compound

A

A substance with constant composition that can be broken down into elements by chemical processes

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4
Q

Molecule

A

A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound

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5
Q

Element

A

Simplest substances, can not be broken down using chemical reactions. Same number of protons.

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6
Q

Graphite

A

Soft black lustrous from that conducts electricity and is used in lead pencils and electrolytic anodes,.

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7
Q

Diamond

A

Clear and typically colorless. Crystalline form of pure carbon and the hardest naturally occurring substance

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8
Q

Buckminsterfullerene

A

A form of carbon having molecules of atoms arranged in a polyhedron resembling a geodesic sphere

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9
Q

Solid

A

Three dimensions, a sample of matter that retains its shape and density when not confined

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10
Q

Liquid

A

A substance that flows freely but is of constant volume, having a consistency like that of water and oil.

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11
Q

Gas

A

An air-like fluid substance which expands freely to fill any space available, irrespective of its quantity

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12
Q

Physical properties

A

Any properties that is measurable often referred to as observable.

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13
Q

Chemical properties

A

A chemical property is a characteristic or behavior of a substance that may be observed when undergong a chemical change or reaction.

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14
Q

Physical change

A

Changes affecting the form of a chemical substance but not its chemical composition. Physical changes are used to separate mixtures into their component compounds

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15
Q

Chemical change

A

A chemical reaction involving the rearrangement

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16
Q

Reaction

A

A action performed or a feeling experienced in response to a situation or event.

17
Q

Mixture

A

A substance made by mixing other substances together,

18
Q

Alloy

A

A metal made by combining two or more metallic elements

19
Q

Pure substance

A

Made of only one type of atom or molecule

20
Q

Homogeneous mixture

A

Same appearance and compostition

21
Q

Solution

A

A liquid mixture in which the minor component is distributed within the major componet

22
Q

Heterogeneous mixture

A

Difference appearance and composition throughout

23
Q

Distillation

A

The action of purifying a liquid by a process of heating and cooling

24
Q

Filtration

A

Separate solids from fluids