Chapter 3 Flashcards

0
Q

Study of matter

A

Chemistry

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1
Q

Part of the universe that has mass and volume

A

Matter

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2
Q

Smallest unit of an element that keeps the properties of the element

A

Atom

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3
Q

Pure substance made of only one type of atom

A

Element

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4
Q

Substance made of two or more types of atoms that are chemically bonded

A

Compound

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5
Q

Type of compound in which bonds are covalent

A

Molecule

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6
Q

Four states of matter

A

Solids, liquids, gases, plasma

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7
Q

Definite volume

A

Solid

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8
Q

Definite shape

A

Solid

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9
Q

Atoms are packed together in fixed positions

A

Solid

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10
Q

Only vibrate in place

A

Solid

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11
Q

Definite volume

A

Liquid

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12
Q

Indefinite shape

A

Liquid

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13
Q

Atoms are close together

A

Liquids

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14
Q

Atoms can overcome attractive forces to flow

A

Liquids

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15
Q

Indefinite volume

A

Gas

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16
Q

Indefinite shape

A

Gas

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17
Q

Atoms move very quickly

A

Gas

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18
Q

Atoms are far apart

A

Gases

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19
Q

Pretty weak attractive forces

A

Gases

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20
Q

Compressible

A

Gases

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21
Q

Hight temperature state in which atoms lose their electrons

A

Plasma

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22
Q

Depend on the amount of matter

A

Extensive

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23
Q

Do not depend on the amount

A

Intensive

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24
Change in substance that doesn't change the identity of the substance (grinding, cutting, melting)
Physical
25
Involves a reaction to take place, a new substance to form
Chemical change
26
Substances that cannot be broken down into simpler substances by chemical reactions
Elements
27
Chemical combinations of elements
Compounds
28
Made of elements
Compounds
29
Can be broken down into elements
Compounds
30
Why are the groups lanthanides and actinide on the bottom?
The keep the width of the chart smaller
31
At room temp are solid, expect mercury
Metals
32
Can be rolled or hammered into sheets
Malleable
33
Can be made into wire
Ductile
34
Can resist breakage when pulled
High tensile strength
35
Poor conductor of heat and electricity
Nonmetals
36
Good conductor of electricity
Metals
37
Many are gases at room temp
Nonmetals
38
Some are solids
Nonmetals
39
Element that has some characteristics of metals and Nonmetals
Metalloids
40
Appear along staircase line
Metalloids
41
Generally unreactive gases
Noble gases
42
Uniform throughout, appears to be one thing
Homogeneous
43
Pure substance - compound
Homogeneous
44
Non uniform, contains regions with different properties than other regions
Heterogeneous
45
Pure substances
Homogeneous compounds
46
Separate into components based on chemical properties
Pure substance
47
Every pure substance has the same
Characteristics, compositions, made of one type of atom
48
One type of atom
Element
49
2 or more types of atoms
Compounds
50
T or F all chemicals have some level of impurity
True
51
T or F not all chemicals in the lab are treated as pure
False
52
Mixtures are Separated into components based on
Physical property
53
All mixtures are made of
Pure substances
54
Each component keeps it own identity and properties
Mixtures
55
Can be separated using physical means
Mixtures
56
Also called solutions
Homogeneous mixtures
57
Water in solution
Aquious
58
Mixture of metals
Alloys
59
No visible parts
Homo mixtures
60
T or F a solution is a homo mixture
True
61
Not uniform in composition, visible parts
Heterogeneous mixtures
62
Physical separation techniques (5)
Filtration vaporization decanting centrifuge paper chromatography
63
Two different elements not chemically combined
Mixture
64
Two different elements chemically combined
Compound
65
Describe one method to separate a heterogeneous mixture
Filtration
66
Describe one method to separate a homogeneous mixture
Distillation
67
If trying to identify an unknown solid, what should help u out to figure out what it is?
Density
68
Cutting hair
Physical
69
Growing grass
Chemical
70
Malleable
Metal
71
Poor conductor of heat
Nonmetals
72
Brittle
Nonmetals
73
Ductile
Metal
74
Good conductor of electricity
Metals
75
Brittle and good conductor of electricity
Metalloids
76
Good conductor of heat
Metals