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Chemistry > Quiz 5 > Flashcards

Quiz 5 Flashcards

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1
Q

Ionic bonds are ____ charged

A

Neutrally

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2
Q

Happens when there are more greenhouse gases?

A

There’s more infrared absorption

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3
Q

Temperatures on earth are ________

A

Cyclical

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4
Q

What do IR waves do in the atmosphere?

A

They vibrate molecules and release heat

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5
Q

What are visible waves released as?

A

Infrared waves

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6
Q

Only ______ will form anions

A

Nonmetals

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7
Q

Only ______ will form cations

A

Metals

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8
Q

In what three ways are earths climates naturally variable?

A

1) Earths orbit, tilt and pull change
2) suns intensity changes
3) atmospheric composition changes

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9
Q

Sunlight is least comprised of what radiation?

A

UV

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10
Q

Charged atom

A

Ion

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11
Q

Large wavelength means ___ frequency

A

Low

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12
Q

What happens to UV and IR radiation?

A

Mostly absorbed by atmosphere first time

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13
Q

Is the symbol for methane?

A

CH4

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14
Q

Greenhouse effect

A

A naturally occurring phenomenon of earths atmosphere

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15
Q

When should you use parentheses when writing a formula with polyatomic ions?

A

When the subscript is more than 1

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16
Q

Ions are electrically ______

A

Charged atom

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17
Q

What frequency has the smallest wavelength?

A

Gamma

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18
Q

Bonds can ______ and ______

A

Stretch and vibrate

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19
Q

What will joy form ions?

A

Metalloids, group 4a nonmetals, noble gases

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20
Q

What do greenhouse gases do?

A

They help maintain earths temperature

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21
Q

Greenhouse gas has the most global warming potential?

A

CFCs

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22
Q

CO2 reacts with water to produce what?

A

Acid rain

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23
Q

What does wavelength measure?

A

Distance between peaks

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24
Q

What is the main source of CO2 in the atmosphere?

A

Energy production

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25
Q

Smallest ratio of cations and anions

A

Formula unit

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26
Q

What are molecules in the atmosphere that absorb infrared light vibrate and release heat called?

A

Greenhouse gases

27
Q

What are the two reasons that scientists can’t perform traditional experiments regarding climate change?

A

System/earth is too big and the timescale is too large

28
Q

What does infrared do to bonds?

A

It stretches or vibrates them

29
Q

Will group b elements for anions or cations?

A

Cations

30
Q

What two things are proposed in the Kyoto protocol?

A

One: greenhouse gas in missions developed countries
Two: the 20/20/20 plan

31
Q

What is frequency?

A

Number of waves passing a fixed point in one second

32
Q

How many times more better is Methane absorbing infrared radiation than CO2

A

20 times

33
Q

What do UV waves do in the atmosphere?

A

Break bonds

34
Q

How do the properties of elemental and ions differ?

A

They vary drastically

35
Q

When there is more CO2 in the air temperatures are ______

A

Higher

36
Q

Sunlight is mostly comprised of what radiation?

A

Infrared

37
Q

What do visible waves do in the atmosphere?

A

They move electrons around and then released with less energy

38
Q

What 3 things do we know about climate change?

A

1) CO2 levels have increased over the past century quickly increased
2) CO2 levels are result of human activity average
3) global temperature has increased over this time

39
Q

As wavelength decreases, frequency _________

A

Increases

40
Q

High frequencies have ____ energy

A

High

41
Q

What is the 20/20/20 plan?

A

Greenhouse gas emotions down, renewable energy up, energy efficiency up

42
Q

Why is our planet warm?

A

Because sunlight stays in the atmosphere

43
Q

Percentage of CO2 is anthropogenic?

A

95%

44
Q

What happens when there’s more infrared absorption?

A

There’s more vibration and therefore more heat released

45
Q

What do microwaves do to bonds?

A

Rotated them

46
Q

What are the ions of iron?

A

Fe II, Fe III

47
Q

What happens when sunlight hits earth?

A

Sam is reflected out and some is absorbed and does chemistry

48
Q

What keeps an ionic bond together?

A

Magnetic force

49
Q

What is the Kyoto protocol?

A

Global technology that man has affected natural processes

50
Q

How do we know historical levels of carbon dioxide?

A

We look at bubbles of air trapped in ice cores and measure the ratios of isotopes of oxygen 16 and 18

51
Q

What are the ions of copper?

A

Cu I, Cu II

52
Q

CO2 sequestration

A

The injection of CO2 into poor space in ground or under ocean

53
Q

What does carbon dioxide do to light?

A

It absorbs and vibrates it

54
Q

What is the ratio of methane with anthropogenic and natural emissions

A

84:16

55
Q

Which has the highest energy?

A

UV

56
Q

What does uv do to bonds?

A

Breaks them

57
Q

If an atom loses an electron is becomes

A

Cation

58
Q

Emissions of methane are tightly related to what?

A

Population trends

59
Q

In order for a molecule to absorb and infrared wave the energy of the wave must match what?

A

The natural frequency of the bond

60
Q

What greenhouse gas has the lowest global warming potential?

A

CO2

61
Q

What affects a molecules ability to absorb infrared waves?

A

It’s shape, electron distribution and redistribution during vibrating

62
Q

Small wavelength means ____ frequency

A

High

63
Q

Atoms is electrically __________

A

Neutral

Chemistry (9 decks)

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