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Chemistry > Chem 3 Vocabulary > Flashcards

Chem 3 Vocabulary Flashcards

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1
Q

Matter

A

Anything that takes up space

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2
Q

Substance

A

Matter that has a uniform and unchanging composition
Ex table salt, hydrogen, oxygen, sucrose, glucose, Mercury

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3
Q

Physical property

A

A substance that can be observed or measured Without changing the composition of the substance
Ex luster, hardness, density, melting point, malleability, ductility,

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4
Q

Luster

A

How shiny or bright something is

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5
Q

Malleability

A

Ability to be pounded into a thin sheet

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6
Q

Ductility

A

Ability to be drawn in a thin wire

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7
Q

Conductitivity

A

Ability to conduct heat or electricity

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8
Q

Extensive property

A

A physical property that is dependent on the amount of substance present
Ex mass, length, width, weight, height, VOLUME

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9
Q

Intensive property

A

A physical property that IS NOT dependent, (independent) on the amount of substance present
Ex color, density, boiling point, melting point, solubility, expansion, porosity

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10
Q

Density

A

Mass per unit volume

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11
Q

Solubility

A

The ability of a substance to dissolve in another substance

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12
Q

Porosity

A

The state of having many pores or holes

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13
Q

Pyrite

A

Fools gold that people tried to sell instead of gold

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14
Q

Thermal

A

Energy or heat

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15
Q

Chemical property

A

Describes the ability of a substance to combine with or change into one or more substances

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16
Q

Stability

A

How stable a substance is

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17
Q

Radioactivity

A

How radioactive something is

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18
Q

Reactivity

A

How reactive something is

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19
Q

Flammability

A

How combustible something is

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20
Q

Ammonia

A

NH3

21
Q

States of matter

A

Solid liquid gas

22
Q

Plasma

A

A fourth state of matter on earth that occurs naturally is lighting bolt and fire

23
Q

Solid

A

Form of matter that has a definite shape

24
Q

Liquid

A

Form of matter that flows, takes shape of container

25
Q

Fluid

A

Substance that flows, has no definite shape
Ex liquid and gas

26
Q

Gas

A

Flows to conform to the shape of its container, fills volume of container

27
Q

Gaseous

A

relating to or having the characteristics of a gas.

28
Q

Vapor

A

Is the gaseous state of the substance that is a solid or liquid at room temp,
Ex steam

29
Q

Physical changes

A

Changes that alter a substance without changing its composition

30
Q

Phase change or changes of state

A

Matter changes from one phase to another, are common example of physical changes
Like gas to liquid

31
Q

Chemical change or chemical reaction

A

Substance change into a new substance

32
Q

Reactants

A

The substance present at the start

33
Q

Products

A

New substances that are formed in reaction

34
Q

Chemical equations

A

Shows the relationship between reactants and products

35
Q

Law of conservation of mass

A

During a chemical reaction, Mass is neither lost nor gained

36
Q

Yields

A

Produces

37
Q

Mixture

A

Combo of 2 or more elements combined physically

38
Q

Element

A

Substances that cannot be separated into simpler substances by physical or chemical means
118 elements
92 natural

39
Q

Synthesize

A

Made by man

40
Q

Symbols

A

Used in place of the Name of element

41
Q

Periods

A

Horizontal row on periodic table

42
Q

Groups or tamilies

A

Vertical columns

43
Q

Compounds

A

Combo of 2 or more different elements that are combined chemically
Like H and O to H2O

44
Q

Electrolysis

A

Process that uses electrical energy to bring about chemical reactions

45
Q

Chemical formula

A

A combo of symbols of the elements that make up that compounds
Ex H2O

46
Q

Law of definite proportions

A

A compound is always composed of the same elements in the same proportion by mass

47
Q

Percentage mass

A

The ratio of mass of each element to the total mass of the compound as a percentage

Percent of mass % = mass of element/ mass of compound x 100

48
Q

Law of multiple proportions

A

When different compounds are formed by a combination of the same elements, different masses of one element combine with the same relative mass of other elements in a ratio of a small whole number

Chemistry (22 decks)

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