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Chemistry Flashcards

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1
Q

Convert Kelvin to Celsius

A

-273

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2
Q

Convert Celsius to Kelvin

A

+273

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3
Q

Convert Fahrenheit to Celsius

A

-32/1.8

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4
Q

Convert Celsius to Fahrenheit

A

X 1.8 + 32

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5
Q

Convert Kelvin to Fahrenheit

A

-273 X 1.8 +32

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6
Q

Convert Fahrenheit to Kelvin

A

-32/1.8 + 273

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7
Q

1 foot in inches

A

12in

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8
Q

1 pound in ounces

A

16 ounces

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9
Q

1 kilogram into grams

A

1000

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10
Q

1 gallon in quarts

A

4 quarts

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11
Q

1000 milliliters in a liter

A

1 liter

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12
Q

100 centigrams in a gram

A

1 gram

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13
Q

10 decimeters in a meter

A

1 meter

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14
Q

What are the 4 prefixes presented in the course?

A

Kilo 1000

Milli 1/1000

Centi 1/100

Deci 1/10

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15
Q

What is density?

A

Mass of a substance in a unit volume of that substance

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16
Q

What is density expressed as?

A

g/ml

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17
Q

What is the equation used to calculate density?

A

D (g/ml) = Mass (grams)/V (milliliters)

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18
Q

How do you calculate for Mass if you know the Density and Volume?

A

M(g) = D (g/ml) x V(ml)

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19
Q

How to calculate for the volume if you know the mass and density?

A

V(ml) = M (g)/D(g/ml)

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20
Q

What is accuracy?

A

It is the nearest of the measured value to the actual value of the quantity being measured

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21
Q

What is Precision?

A

The degree of agreement between several measured values of quantity

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22
Q

What are the rules for determining the significant figures in a Number?

A
  1. All n on-zero digits are significant
  2. All zeros between or following non-zero numbers are significant
  3. Zeros to the left of a decimal or preceding other non-zero numbers are not significant
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23
Q

Significant figures in addition/subtraction

A

Round off so that the same number if decimal places as the measurement with the fewest decimal places

ex. 8.612 + 4.51 + 0.20 + 3.9 = 17.222 = 17.2 because of 3.9

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24
Q

Rules of significant figures in multiplication/division

A

Results should be rounded off as to contain the same number of significant figures with the least number of significant figures

128.61/51.20 (4 significant figures)= 2.51191 rounding —>2.512

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25
Q

Order of operation

A

Parentheses
Exponents
Multiplication/division
Addition/Subtraction

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26
Q

Al

A

Aluminum

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27
Q

Sb

A

Antimony

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28
Q

Ar

A

Argon

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29
Q

As

A

Arsenic

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30
Q

Ba

A

Barium

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31
Q

Be

A

Beryllium

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32
Q

Bi

A

Bismuth

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33
Q

B

A

Boron

34
Q

Br

A

Bromine

35
Q

Cd

A

Cadmium

36
Q

Ca

A

Calcium

37
Q

C

A

Carbon

38
Q

Cl

A

Chlorine

39
Q

Cr

A

Chromium

40
Q

Co

A

Cobalt

41
Q

Cu

A

Copper

42
Q

F

A

Flurine

43
Q

Au

A

Gold

44
Q

He

A

Helium

45
Q

H

A

Hydrogen

46
Q

I

A

Iodine

47
Q

Fe

A

Iron

48
Q

Pb

A

Lead

49
Q

Li

A

Lithium

50
Q

Mg

A

Magnesium

51
Q

Mn

A

Manganese

52
Q

Hg

A

Mercury

53
Q

Ne

A

Neon

54
Q

Ni

A

Nickel

55
Q

N

A

Nitrogen

56
Q

O

A

Oxygen

57
Q

P

A

Phosphorus

58
Q

Pt

A

Platinum

59
Q

K

A

Potassium

60
Q

Se

A

Selenium

61
Q

Si

A

Silicon

62
Q

Ag

A

Silver

63
Q

Na

A

Sodium

64
Q

Sr

A

Strontium

65
Q

S

A

Sulfur

66
Q

Sn

A

Tin

67
Q

Compound

A

Combination of two elements

68
Q

Homogeneous Mixture (Solution)

A

Combination of two elements but seen as one layer

69
Q

Heterogeneous Mixture

A

A combination of two compounds that appear as multiple layers

70
Q

Physical Change of a chemical

A

Does not change chemical composition

Ex. Gasm solid, liquid and gas

71
Q

Chemical Change if a chemical

A

Changes composition of matter (Chemical Reaction)

Often visible as heat or light, color change, production of an insoluble solid, and gas

Ex. Burning (combustion), Rusting (oxidizing), Explosion or baking

72
Q

What is the third type of chemical change

A

Temperature change

73
Q

Calorimetry

A

The study of how much heat is involved in a temperature or physical change

74
Q

Thermochemistry

A

The study of how much heat in involved in chemical change

75
Q

Exothermic

A

Heat os given off (extracted)

76
Q

Nucleus

A

Mass in the center of atom, contains two types of particle: Protons and neutrons

77
Q

Protons

A

Have a positive charge (+)

78
Q

Neutrons

A

Have no charge

79
Q

What are the low mass particles that surround the nucleus of an atom? What is their charge?

A

Electrons, negative

80
Q

Atomic number

A

Whole number, represents # of protons and also the # of electrons.

81
Q

Atomic Charge

A

of protons - # of electrons which always = 0

82
Q

Atomic weight

A

The larger number, usually as a decimal. It is = to the sum of the number of protons and neutrons

Microbiology (2 decks)

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