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Chemisty > Chapter 1 > Flashcards

Chapter 1 Flashcards

0
Q

Define a Meter

A

Time taken for light to travel thous a vacuum.

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1
Q

Define a Second

A

The duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyper fine levels of ground state of the cesium 133 atom

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2
Q

Define Coulomb

A

Basic unit of electric charge

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3
Q

Intensive Property

A

A characteristics of an object that only has to do with what type of matter it is

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4
Q

Extensive Property

A

A characteristic of an object that has to do with the amount of matter present

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5
Q

Substance

A

Matter that has a uniform and definite composition

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6
Q

States of Matter

A

Solid, Liquid, Gas

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7
Q

Solid

A

A form of matter that has a shape and volume

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8
Q

Liquid

A

A form of matter that has an indefinite shape, flows, yet has a fixed feeling

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9
Q

Gas

A

A form of matter that takes both the shape and volume of it container

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10
Q

Mixture

A

A physical blend of two or more substances that are not chemically combined

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11
Q

Homogeneous

A

A mixture that is uniform in composition; components are very distrusted and not easily distinguished

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12
Q

Heterogeneous

A

A mixture that is not uniform in composition; components are not distinguished throughout mixture

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13
Q

Solution

A

A homogeneous mixture; consists of solutes dissolved in solvent

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14
Q

Element

A

The simplest form of matter that has a unique set of properties

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15
Q

Compound

A

A substance that contains two or more elements chemically combined in a fixed proportion

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16
Q

Chemical change

A

A change that produces matter with different composition than the original matter

17
Q

Conversation of matter

A

Matter can’t be created or destroyed by a chemical reaction

18
Q

Na

A

Sodium

19
Q

K

A

Potassium

20
Q

Sb

A

Antimony

21
Q

Cu

A

Copper

22
Q

Au

A

Gold

23
Q

Fe

A

Iron

24
Q

Pb

A

Lead

25
Q

Sn

A

Tin

26
Q

W

A

Tungsten

27
Q

All samples of a given substance have the same intensive properties

A

Every sample has the same composition

28
Q

Two categories used to classify physical changes

A

Reversible and Irreversible

29
Q

Two categories used to classify properties of matter

A

Intensive and Extensive

30
Q

How are mixtures classified?

A

Heterogeneous Mixtures; Homogeneous Mixtures

31
Q

What type of properties can be used to separate mixtures?

A

particle size(Filtration), phase, solubility, and boiling point, magnetism. Property- Distillation, Filteration

32
Q

The term phase as it relates to homogeneous and heterogeneous mixtures

A

phase in anything that has a uniform and definite composition (look in book)

33
Q

How are a substance and a solution similar? How are they different?

A

Both substances and a solution have a uniform composition throughout. For differences, a substance has a definite composition where as a a solution has a variable composition and a mixture os substances.

34
Q

How is a compound different from an element?

A

Compounds can be broken down into simpler substances by chemical means, but elements cannot.

35
Q

How can you distinguish a substance from a mixture?

A

If the composition of a material is fixed, the material is a substance. If the composition of a material may vary, the material is a mixture.

36
Q

What are chemical symbols and chemical formulas used for?

A

Chemical symbols to represent elements, and chemical formulas to represent compounds or a single element

37
Q

Mass

A

The amount of matter in an object

38
Q

Weight

A

The amount of gravitational on an object

39
Q

Force

A

Causes thing to move

40
Q

Difference between chemical and physical changes

A

Chemical change- changes the composition

Physical change- changes appearance

41
Q

What 3 elements makeup sugar

A

C6H12O6

Chemisty (1 decks)

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