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Health Science Chemestry > Trimester 3 Unit 1 > Flashcards

Trimester 3 Unit 1 Flashcards

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Biology 101 flashcards
1
Q

What is the difference between the density of normal bones versus bones with Osteoporosis?

A

There is more space between the spongy sections of the bones with Osteoporosis.

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2
Q

How do you improve bone health?

A

Increase physical activity, get enough calcium, get enough vitamin D, and maintain a healthy weight.

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3
Q

Solid volume units

A

m3, cm3

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4
Q

Liquid volume units

A

L, mL

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5
Q

Density

A

Mass per unit of volume

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6
Q

What is Osteoporosis?

A

A low density.

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7
Q

What is the formula for density?

A

Mass/volume

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8
Q

What is normal bone density?

A

> 833 mg/cm3

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9
Q

What is the density of osteopenia?

A

833-648 mg/cm3

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10
Q

What is the density of Osteoporosis

A

<648 mg/cm3

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11
Q

What is the formula for the density of a cylinder?

A

V=Pir2h

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12
Q

Why is it so hard to climb Mt. Everest?

A

Limited oxygen, temperature, fierce winds, oxygen decreases by 50%

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13
Q

As we go higher into our atmosphere what happens to the gases?

A

They will be thinner and cooler

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14
Q

What is the Death Zone?

A

a level of altitude that will kill you if you stay too long (8000m).

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15
Q

What are the symptoms of altitude sickness?

A

Pounding headaches, dehydration, loss of vision, struggle to breath.

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16
Q

Why can’t you get warm at high altitudes?

A

There’s not enough oxygen to get warm

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17
Q

What do we use our atmosphere for?

A

holds in harmful gases, warmth, to breath.

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18
Q

Why is our atmosphere made of gas?

A

The components of the air have a very low boiling point

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19
Q

Is the atmosphere a solution, suspension, or colloid?

A

Solution, everything is evenly mixed.

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20
Q

What is 78% of the atmosphere?

A

Nitrogen

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21
Q

What is 21% of the atmosphere?

A

Oxygen

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22
Q

What is 0.93% of the atmosphere?

A

Argon

23
Q

What is 0.033% of the atmosphere?

A

Carbon Dioxide

24
Q

What is the Thermosphere?

A

Outer most layer of the atmosphere that blocks deadly radiation and causes northern lights.

25
Q

What is the Mesosphere?

A

A cold layer that slows down meteors.

26
Q

What is the Stratosphere?

A

The second layer of the atmosphere contains the ozone layer and helps block UV radiation from the sun.

27
Q

What is the Troposphere?

A

The closest layer to earth where all the weather takes place.

28
Q

What happens to the altitude as the air pressure increases?

A

The altitude decreases.

29
Q

What happens to the Temperature as the altitude increases?

A

The temperature decreases

30
Q

What happens to the gas composition as the altitude increases

A

The gas composition stays the same.

31
Q

What is Pressure?

A

Force and space.

32
Q

What is the formula for pressure?

A

force/area.

33
Q

What do gas molecules exert pressure on?

A

Their surroundings.

34
Q

What are the units of pressure?

A

psi, mmHg, atm, torr

35
Q

What is the SI unit for force?

A

Newton (N).

36
Q

What is the SI unit for Area?

A

Meter Squared (m2).

37
Q

What is the SI unit for pressure?

A

N/m2 (Pascal, Pa).

38
Q

What is the English unit for Force?

A

Pounds (lbs).

39
Q

What is the English unit for Area?

A

Inch Squared (in2).

40
Q

What is the English unit for Pressure?

A

Psi

41
Q

What causes air pressure in a sealed container?

A

Air molecules are moving and bounce off the sides of the container. These collisions exert force on the walls of the container.

42
Q

What is the air pressure at sea level?

A

101kPa, 1atm, 760mmHg

43
Q

What is STP?

A

The standard temperature and pressure (0C&1atm).

44
Q

What is Boyles Law?

A

The temperature stays constant.

45
Q

What happens to the volume in the pressure decreased in Boyles Law?

A

The Volume increases.

46
Q

What is the formula for Boyles Law?

A

P1V1=P2V2

47
Q

What is Charles Law?

A

Pressure stays consistant.

48
Q

What happens to the Temperature if the Volume increased in Charles Law?

A

The Temperature increases.

49
Q

What is the formula for Charles Law?

A

V1/T1=V2/T2 (cross multiply).

50
Q

How do you find Kelvin?

A

Celsius + 273

51
Q

What is Gay Lussacs Law?

A

Volume stays consistant.

52
Q

What happens to the Pressure if the Temperature increases?

A

The Pressure will increase.

53
Q

What is the formula for Gay Lussaca Law?

A

P1/T1=P2/T2 (cross multiply).

54
Q

What is the formula for the Combined Gas Law?

A

P1V1/T1=P2V2/T2 (cross multiply).

Health Science Chemestry (11 decks)

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