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Chemistry > Intro To Chemistry > Flashcards

Intro To Chemistry Flashcards

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1
Q

Earth’s ___________ is made up of many layers.

A

ATMOSPHERE

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2
Q

What is the lowest level in the atmosphere called ?

A

Troposphere

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3
Q

What is the level next to the lowest in the atmosphere called ?

A

Stratosphere

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4
Q

Stratosphere level contains what type of protective layer ?

A

Ozone layer.

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5
Q

How does ozone form ?

A

Ozone forms when oxygen gas is struck by ultraviolet radiation in the upper part of the stratosphere

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6
Q

What does an ozone layer absorb ?

A

Ultraviolet radiation

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7
Q

What is the thinning of the ozone layer called ?

A

Ozone hole

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8
Q

True or false?

CFC is another name for a chlorofluorocarbon

A

True

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9
Q

True or false ?

CFCs are made up of carbon, fluorine, and cesium

A

False

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10
Q

True or false ?

All CFCs are synthetic chemicals

A

True

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11
Q

True or false ?

CFCs usually react readily with other chemicals

A

False

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12
Q

True or false ?

CFCs were developed as replacements for toxic refrigerants

A

True

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13
Q

Chemistry

A

Is the study of matter and the changes it under goes

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14
Q

Matter

A

Is anything that has mass and takes up space

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15
Q

Mass

A

Is a measurement that reflects the amount of matter

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16
Q

Things made of matter are :

A
  1. Car
  2. Human body
  3. Radio
  4. Textbook
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17
Q

Things not made of matter :

A
  1. Magnetic field
  2. Feeling
  3. Heat
  4. light
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18
Q

True or false ?

The mass of an object can vary with the objects location

A

True

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19
Q

True or false ?

The mass measurement includes the effect of earths gravitational pull on the objects being measured

A

False

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20
Q

True or false ?

Scientist measure the amount of matter in terms of mass

A

True

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21
Q

True or false ?

Subtle differences in weight exist at different locations on earth

A

False

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22
Q

True or false ?

Your mass on the moon would be smaller that your mass on earth

A

True

23
Q

Biochemistry

A

The study of the matter and process of living things

24
Q

Organic chemistry

A

The study of carbon containing chemicals

25
Q

Analytical chemistry

A

The study of the components and compositions of substances

26
Q

Inorganic chemistry

A

The study of matter that does not captain organic chemicals

27
Q

Physical chemistry

A

The study of the behavior and changes of matter and the related energy changes

28
Q

Organic chemistry relates to :

A

Plastics

29
Q

Physical chemistry relates to :

A

Reaction mechanisms

30
Q

Biochemistry related to :

A

Metabolism

31
Q

Analytical chemistry relates to :

A

Quality control

32
Q

Inorganic chemistry relates to :

A

Minerals

33
Q

Macroscopic

A

Is visible to the naked eye

34
Q

Submicroscopic

A

Is too small to be seen by the naked eye

35
Q

Scientific method consist of :

A 
Observations
Hypothesis 
Experiments 
Conclusion 
Theory 
Scientific law
36
Q

Observation

A

The act of gathering information

37
Q

Qualitative data

A

Refers to physical characteristics such as color, odor or shape

38
Q

Quantitive data

A

Refers to mass, volume , and temperature measurements

39
Q

Independent variable

A

A variable controlled by the experimenter

40
Q

Dependent variable

A

Changes in value based on the value of the controlled variable

41
Q

A Constant

A

Is a factor that is not allowed to change during and experiment

42
Q

A control

A

Is a tentative explanation of observations

43
Q

A theory

A

Is an explanation supported by many experiments

44
Q

A model

A

Is a visual, verbal, and or mathematical explanation of how things occur

45
Q

Scientific method refers to

A

Molina and Rowland used a model to learn about CFCs in the atmosphere

46
Q

Ultraviolet light refers to

A

The hypothesis made that CFCs breakdown in the stratosphere due to interactions with so

47
Q

Molina and Rowland thought that these interactions produces a chemical that could break down

A

Ozone

48
Q

To test their ________ Molina and Rowland examined interactions that occur in the stratosphere

A

Hypothesis

49
Q

Based on their data, Molina and Rowland developed a _____ that explained how CFCs destroy ozone

A

Model

50
Q

Molina and Rowland concluded that __________ formed by the breakdown of CFCs in the stratosphere reacts with ozone and destroys it

A

Chlorine

51
Q

Applied research

A

Is undertaken to solve a specific problem

Is used to find CFC replacements

52
Q

Pure research

A

Seeks to gain knowledge for sale of knowledge itself

Was conducted by Molina and Rowland

53
Q

When should you read the label on a chemical container

A

Before removing content

54
Q

Technology

A

Is the practical use of scientific information

Chemistry (13 decks)

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