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Gen Chem 1 > 1.1 > Flashcards

1.1 Flashcards

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1
Q

Accuracy

A

Now closely a measurement aligns with correct value

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2
Q

Properties of matter: solid

A

Has fixed shape and volume

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3
Q

Properties of matter: liquid

A

Takes shape of container

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4
Q

Properties of matter: gas

A

Expands to fill container

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5
Q

Mass vs. Weight

A

Mass: measure of the amount of matter in it

Weight: Force that gravity exerts on an object

-The weight of an object changes as the force of gravity changes, but its mass does not

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6
Q

Law of conservation of matter

A

Summarizes many scientific observations about matter

It states that there is no detectable change in the total quantity of matter present when matter converts from one type to another or changes among solid liquid or gaseous state

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7
Q

Element * physical state and composition

A

Pure substance that cannot be Brocken down into simpler substances by chemical changes

Gold, sulfur, oxygen ,copper

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8
Q

Compound * physical state and composition

A

Pure substances that are comprised of two or more elements

Orange, mercury (II) oxide, water

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9
Q

Homogenous mixture * physical state and composition

A

A mixture with a composition that varies from point to point

Italian dressing , clnoctate chip cookies, granite

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10
Q

Heterogeneous mixture * physical state and composition

A

Aka solutions exhibit uniform composition and appears visually same throughout

Air, maple syrup, gasoline, salt in water

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11
Q

Define atom

A

The smallest particle of an element that has the properties of that element and can enter into a chemical combination

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12
Q

Examples of atoms

A
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13
Q

Examples of molecules

A

molecule consists of two or more atoms joined by strong forces called chemical bonds

Water, carbon dioxide and glucose

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14
Q

Matter: does it have constant properties and composition?

A

If no, then it is a mixture

If yes, then it s a pure substance

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15
Q

Is the mixture uniform throughout?

A

Yes: homogeneous
No; heterogeneous

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16
Q

Can the pure substance be simplified?

A

No: then it is an element
Yes: then its a compound

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17
Q

Base units of the SI system:length

A

Meter (m)

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18
Q

Base unit of the si system: mass

A

Kilogram (kg)

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19
Q

Base units of the si system: time

A

Second (s)

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20
Q

Base units of the si system: temp

A

Kelvin (K)

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21
Q

base unit of the si :Electric current

A

Ampere (A )

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22
Q

Base units of the si system: amount of substance

A

Mole (mol)

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23
Q

Femto

A

f

1 f= 10^-15

1 *10^-15= 0.000000000000001

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24
Q

Pico

A

p

10^-12

1 picometer =1*10^-12 m

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25
Q

Nano

A

n

10^-9

4 nanograms= 4*10^-9 grams= 0.000000004 grams

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26
Q

Nano

A

n

10^-9

4 nanograms= 4*10^-9 grams= 0.000000004 grams

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27
Q

Micro

A

10^-6

1 microliter = 1*10^-6= 0.000001 L

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28
Q

Matter

A

Anything that takes up space and has mass

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29
Q

Physical property

A

Is a characteristic of matter that is not associated with a change in its chemical composition

Examples are density color hardness melting and boiling points And electrical conductivity

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30
Q

A physical change is

A

Change in the state of properties of matter without any accompanying change in the chemical identity of the substance is contained in the matter

Example is when you observe wax melting or when steam condenses into liquid water

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31
Q

Chemical property

A

The ability to change from one type of matter into another or the inability to change

Examples are flammability Texas City acidity and any other types of reactivity

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32
Q

Examples of chemical changes

A

When iron combines with oxygen in the presence of water forms to rust

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33
Q

Chemical change is

A

When one or more types of matter that differs from the matter present before the change

34
Q

Extensive property vs intensive property

A

A drop of hot cooking oil spattered on your arm cousins brief minor discomfort we’re at a pot of hot oil fields severe burns both the drop in the part of oil are the same temperature which is an intensive property but the pot clearly contains much more heat which is extensive property

35
Q
A
36
Q
A
37
Q

Using displacement of water to determine density

A
38
Q

Using displacement of water to determine density

A
39
Q

Precision

A

How closely a measurement matches the same measurement when repeated

40
Q

Significant figures

A

All of the digits in a measurement, including the uncertain last digit

41
Q

Non-zero digits are always

A

Significant

42
Q

Zeros in between non-zero digits are

A

Significant

43
Q

After the decimal zeros to the right of a non zero digit are

A

Significant

44
Q

zeros to the left of a nonzero digit are

A

Not significant

45
Q

zeros to the right of a non- zero number are always

A

Significant

46
Q

Whole number ending in zero and have no decimal point are

A

Ambiguous

47
Q

Sigfigs of: 26.38

A

4

48
Q

Sig figs of 30006

A

5

49
Q

Sig figs of 6002.1

A

5

50
Q

Sig ass of 0.05070

A

4

51
Q

Sigfigs of 50.000

A

5

52
Q

Sigfigs of 50

A

1 or 2

53
Q

Sigfigs of 50.

A

2

54
Q

Sig figs of 5.0* 10^1

A

2

55
Q

Sigfigs of 5 *10^1

A

1

56
Q

Addition and subtraction sig fig rules

A
57
Q

Multiplication and division sig figs rule

A
58
Q

Multiplication and division sig figs rule

A
59
Q

Add 2.334 ml and 0.31 ml

A

2.64 ml

60
Q

Subtract 55.8752m from 56.533m

A

0.658m

61
Q

Multiply 2.334 cm and 0.320cm

A

0.747 cm2

62
Q

Mixed operation rules

A
63
Q

Mixed operation rules

A
64
Q

(14.115+5421.15) /14.1

A
65
Q

Equation for speed

A

Speed = distance/ time

66
Q

Equation for time

A

Time = distance/ speed

67
Q

1 m =

A

1.0936 yards

68
Q

1in=

A

2.54 cm

69
Q

1 km =

A

0.62137 mi

70
Q

1 mi=

A

1609.3m

71
Q

1L=

A

1.0567 qt

72
Q

Diatomics

A

Have- H2
No- N2
Fear- F2
Of- O2
Ice- I2
Cold- Cl2
BRew- Br2

73
Q

Tetra

A

T

1x1012

74
Q

Giga (G)

A

1 x 10^9

75
Q

Mega (M)

A

1x10^6

76
Q

Kilo (k)

A

1x103

77
Q

Deci

A

1x10^-1

78
Q

Centi (c)

A

1x10 -2

79
Q

Milli (m)

A

1x10 -3

80
Q

Micro

A

1x10 -6

81
Q

Nano (n)

A

1x10 -9

82
Q

Pico (p)

A

1x10 -12

Gen Chem 1 (1 decks)

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