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Chemistry L > 1.1 To 2.8 > Flashcards

1.1 To 2.8 Flashcards

1
Q

SI

A

System international or metric system

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2
Q

Area

A

m^2

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3
Q

Volume

A

m^3

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4
Q

1mL

A

1cm^3

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5
Q

1L

A

1dm^3

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6
Q

Density

A

The mass of a unit volume. To calculate: density= mass / volume

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7
Q

Density of water?

A

1g/cm^2

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8
Q

Precise

A

How close are the values to each other

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9
Q

Accurate

A

How close are the values to the real value

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10
Q

Solid properties

A

Definite shape and definite volume

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11
Q

Liquid properties

A

Definite volume, indefinite shape (take shape of the container)

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12
Q

Gas properties

A

Indefinite volume and indefinite shape (always take the shape of the container)

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13
Q

Matter def

A

Anything with a mass

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14
Q

Phase boundary

A

Interphase

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15
Q

Mixture

A

Two or more pure substances

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16
Q

Elements

A

Elements are the simplest chemically indivisible particles

17
Q

Sublimination

A

Solid to gas

18
Q

Deposition

A

Gas to solid

19
Q

Compounds

A

Compounds are composed of two or more different elements in a constant proportion.

20
Q

Law of definite proportion

A

One compound always contains the same elements in the same proportion

21
Q

Law of multiple proportion

A

Hydrogen peroxide?

22
Q

Liquid to gas

A

Evaporation

23
Q

Solid to liquid

A

Melting

24
Q

Gas to liquid

A

Condensation

25
Q

Liquid to solid

A

Freezing

26
Q

Physical change

A

A physical change does not alter the composition or identity of a substance. Ex: ice melting

27
Q

Chemical change

A

A chemical change alters the composition or identity of the substance(s) involved. Ex: hydrogen gas burns in oxygen gas to form water

28
Q

Thermochemistry

A

It is the study of heat changes in chemical reactions

29
Q

System

A

The system is the specific part of the universe that is of interest in the study

30
Q

Open system

A

Exchange of mass (water vapor) and energy (heat).

31
Q

Closed system

A

Exchange of energy (heat)

32
Q

Isolated system

A

No exchange

33
Q

Solutions

A

Homogenic mixtures (cannot observe phase boundary) ex: water and sugar

34
Q

Heterogenic mixtures

A

We can see phase boundaries. Ex:oil and water

35
Q

0 Celsius

A

273 kelvin

Chemistry L (2 decks)

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