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Chemistry 1210 > Terms > Flashcards

Terms Flashcards

1
Q

Avogadro’s Number

A

6.022x10^23

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2
Q

How many inches in a centimeter?

A

1 inch = 2.54cm

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3
Q

How many grams in a lb?

A

1lb = 453.6g

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4
Q

Steps in scientific method

A
  1. Observe
  2. Form a question
  3. Form Hypothesis
  4. Conduct Experiment
  5. Formulate Theory
  6. Test Theory
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5
Q

1mL = X cm^3

A

1mL = 1cm^3

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6
Q

Mass unit

A

grams

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7
Q

Length Unit

A

Meter

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8
Q

Temp Unit

A

Kellvin

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9
Q

Amount of substance unit

A

mole

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10
Q

Compound

A

Substance composed of 2 or more elements

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11
Q

Organic Compound

A

Usually contains Carbon, Hydrogen, and Nitrogen

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12
Q

1g = X amu

A

1g = 6.022x10^23

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13
Q

1amu = X grams

A

1amu = 1.66054x10^-24

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14
Q

How to find deviation

A
  1. Work out the Mean (the simple average of the numbers)
  2. Then for each number: subtract the Mean and square the result
  3. Then work out the mean of those squared differences.
  4. Take the square root of that and we are done!
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15
Q

1m = how many feet

A

3.28ft

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16
Q

1inch^3 = Xcm^3

A

16.387cm^3

17
Q

1 gallon = x Liters

18
Q

1mile = Xm

19
Q

Diameter of an atom

A

(1x10^-10m) to (5x10^-10m)

20
Q

angstrom in meters

21
Q

6-?
C
12

A

Number of protons and electrons

22
Q

6
C
12-?

A

12-6=6 neutrons

Bottom minus top = neutrons

23
Q

Definition of density

A

Amount of mass in a unit volume of a substance

24
Q

Derived unit

A

Obtained by multiplication or division of one or more of the base units.

25
Pure substance
Matter with a distinct property that does not vary from sample to sample. H2O & salt
26
Mixtures
Combo of 2 or more substances in which each substance retains its chemical identity
27
Degrees Fahrenheit to degrees Celsius
(5/9)x(F-32)
28
Law of constant composition
Elemental Composition of a compound is always the same.
29
Intensive properties
Do not depend on a amount
30
Precision
How closely individual measurements agree with one another.
31
Celsius to Kelvin
K= C+273.15
32
Accuracy
How closely individual measurements agree with the correct value.
33
Heterogeneous
Mixtures that are not uniform
34
Homogeneous
Mixture is uniformed throughout
35
Physical properties
Can be observed without changing the identity or composition of a substance.
36
Chemical properties
The way a substance may change or react to form other substances.
37
Extensive property
dependent on a amount
38
C to F
(9/5)xC+32
39
Density formula
Density = Mass/Volume

Chemistry 1210 (9 decks)

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