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Chem 121 FINAL > FINAL > Flashcards

FINAL Flashcards

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1
Q

Homogeneous

A

A mixture whose composition is uniform

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2
Q

Heterogeneous

A

A mixture whose composition is not uniform

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3
Q

Physical Properties

A

Properties that can be overserved like color, odor, and melting point

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4
Q

Chemical Properties

A

Properties based upon a chemical reaction

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5
Q

Density

A

D=M/V

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6
Q

Accuracy

A

How close it is to the true value

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7
Q

Precision

A

How closely the measurements are to each other

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8
Q

How to find # of electrons

A

of protons + # of charge = # of electrons

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9
Q

Alkali Metals

A

Period 1A / 1 Val Electron / Highly Reactive

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10
Q

Alkaline Earth Metals

A

Period 2A / 2 Val Electrons

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11
Q

Halogens

A

Period 7A / 7 Valence Electrons /Mostly Gasses

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12
Q

Noble Gases

A

Period 8A / 0 Valence Electrons

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13
Q

Ionic Compound

A

Metal + Nonmetal

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14
Q

Molecular Compounds

A

Nonmetal + Nonmetal

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15
Q

Cations

A

Typically formed from metals

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16
Q

Anions

A

Typically formed from non-metals

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17
Q

Naming Ionic compounds

A

Cation name + Anion name

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18
Q

Acids

A

Uses H as the metal and yield H+ when dissolved in water

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19
Q

mono-

A

1

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20
Q

di-

A

2

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21
Q

tri

A

3

22
Q

tetra-

A

4

23
Q

penta-

A

5

24
Q

hexa-

A

6

25
Q

hepta-

A

7

26
Q

octa-

A

8

27
Q

nona-

A

9

28
Q

deca-

A

10

29
Q

Formula Weight

A

Sum of ((Number of element)*(element weight))

30
Q

Mass Precent

A

((# of atoms)*(atomic weight))/(Formula Weight)

31
Q

Avogadros #

A

1 mole = 6.02*10^23 particles

32
Q

% yield

A

actual / theoretical

33
Q

Bases

A

Accept H in a solution and produces OH

34
Q

Strong Bases

A

LiOH, NaOH, KOH,RbOH, CsOH,Ca(OH)2,Sr(OH)2,Ba(OH)2

35
Q

Acid + Base yeilds ?

A

H2O + salt

36
Q

Oxidation

A

LEO Loss of Electrons

37
Q

Reduction

A

GER Gain of Electrons

38
Q

Oxidation states

A

1.Fluorine -1
2.Hydrogen +1
3.Oxygen -2
4.Group 7A -1
5.Group 6A -2
6.Group 5A -3

39
Q

Molarity (M)

A

M=mols of solute/Liters of solute

40
Q

Dilution Equation

A

M1V1=M2V2

41
Q

Enthalpy(H)

A

Measures flow of heat

42
Q

Change in H

A

H,final - H,inital

43
Q

+⍍H

A

Endothermic

44
Q

-⍍H

A

Exothermic

45
Q

Speed of light (c)

A

c=2.99*10^8m/s

46
Q

Plancks Constant (H)

A

H=6.626*10^-34Js

47
Q

frequency

A

freq = c/wavelength

48
Q

energy in terms of light

A

E = H * freq

49
Q

spdf

A

0,1,2,3

50
Q

Ideal gas law

A

PV=nRT

51
Q

R = gas constant = ?

A

= 0.08206 Latm/molk

52
Q
A

Chem 121 FINAL (1 decks)

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