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Chem 1A > Lab Exam 2 > Flashcards

Lab Exam 2 Flashcards

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1
Q

What is the acronym for colour

A

PRO
YG
B

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2
Q

Metals + 02 =

A

Metal oxide

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3
Q

Non Metals + 02 =

A

Nonmetal oxide

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4
Q

Metal oxide + water =

A

Base

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5
Q

Nonmetal + water =

A

Acid

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6
Q

Metal + acid =

A

Salt + H2

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7
Q

Nonmetal + acid =

A

NR

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8
Q

P4 + 502 =

A

P4O10

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9
Q

P4O10 + H20 (Balance)

A

P4O10 + 6H2O = 4H3PO4

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10
Q

What colour does litmus turn in Basic solution

A

Blue

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11
Q

What colour does litmus turn in Acidic solution

A

Red/pinkish

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12
Q

What colour does phenolphthalein turn in Basic solution

A

Pink

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13
Q

What colour does phenolphthalein turn in Acidic solution

A

Clear

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14
Q

Reactivity trend goes

A

Left

Down

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15
Q

What are TUMS pills

What gas does it produce when it reaches your stomach

A

Calcium Carbonate = CaCo3

CO2

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16
Q

When are line spectrums produced

What happens with different gas

Is the light hot or cold

Example

A

When electricity is pass through a prism

If you change the gas then you change the pattern of lines

Cold light

E.g. Fluorescent light

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17
Q

Shorter wave length =

A

Higher energy
Bigger energy gap
More towards blue
Higher frequency

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18
Q

Longer wavelength

A

Lower energy
Smaller energy gap
More towards red
Lower frequency

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19
Q

Hydrogen lamp produces

A

L

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20
Q

Mercury lamp produces

A

L

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21
Q

Incandescent light bulm produces

A

C

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22
Q

White LED produces

A

C

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23
Q

Light stick produces

A

PC

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24
Q

Coloured LED produces

A

PC

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25
Q

Neon tube produces

A

L

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26
Q

Slope equation

Concentration equation

A

Y2 - Y1 / X2 - X1

Absorbance / slope

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27
Q

Emission is from a _____ n value to a ______ n value

A

Higher
to
Lower

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28
Q

Absorption is from a _____ n value to a ______ n value

A

Lower
to
Higher

29
Q

Na + H2O =

A

2Na + 2OH + H2

30
Q

K + H2O =

A

2K + 2OH + H2

31
Q

Ca + H2O =

A

Ca + 2OH + H2

32
Q

Mg + H2O =

A

Mg(OH)2 + H2

33
Q

Mg + HCL =

A

Mg + H2

34
Q

Al + HCL =

A

2Al + 3H2

35
Q

Si + HCL =

A

NR

36
Q

S + HCL =

A

NR

37
Q

Na2O + H2O =

A

2Na + 2OH

38
Q

Ca + O2 =

A

2CaO

39
Q

CaO + H2O =

A

Ca(OH)2

40
Q

CO2 + H2O =

A

H2CO3

41
Q

CaCO3 + HCL =

A

Ca + CO2 + H2O

42
Q

S8 + 8O2 =

A

8SO2

43
Q

SO2 + H2O =

A

H2SO3

44
Q

P4 + 5O2 =

A

P4O10

45
Q

P4O10 + 6H2O =

A

4H3PO4

46
Q

2Mg + O2 =

A

2MgO

47
Q

Trend for affinity

A

Up

Right

48
Q

Trend for band energy

A

Up

Right

49
Q

What is the mol to mol ratio between Mg and H2 in exp 10

A

1:1

50
Q

What is the mol to mol ratio between Mg and HCL

A

1:2

51
Q

Semiconductors are usually…

A

A little metalic and a little non metal

52
Q

The photocells had the lowest resistance in the

A

Dark

53
Q

Metal + Water =

A

Base + H2

54
Q

When two liquids each are 50 ml mix well together what happens

A

More than 100ml

Cold

55
Q

When two liquids each are 50 ml mix poorly together what happens

A

Less than 100ml

Hot

56
Q

50ml + 50ml = 105.0

Why is this

A

Interactions between molecules are weaker or repulsive

Making it colder

57
Q

50ml + 50ml = 95.0

Why is this

A

Interactions between molecules are stronger

Making it hotter

58
Q

Pepper flakes float in ____

and sink in _____

A

Water

Soap

59
Q

Speed of light (c)

A

3.0 x 10^8 m/s

60
Q

Plancks constant (h)

A

6.63 x 10^-34 J

61
Q

Rybergs constant (Rh)

A

2.18 x 10^-18 J

62
Q

E =

A

h x v

c x h / wavelength

  • RH / n^2
  • RH(1/nf^2 - 1/ni^2)
63
Q

C =

A

Wavelength x V

64
Q

Blue sand is…

A

Hydrophobic

65
Q

Whats the coversion of nm into m

A

(1 / 10^9)

66
Q

What is the conversion of cm into Antrom

A

(10^8 / 1)

67
Q

What geometries are plananr

A

Linear

Bent

Square pyramidal

T shaped

68
Q

If there is an air bubble in the buret, what happens to the R value

A

Greater than true value

Volume is larger than true value

69
Q

Metallic trend is

A

Left

Down

Chem 1A (11 decks)

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