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Chemistry > Chapter 1 > Flashcards

Chapter 1 Flashcards

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1
Q

Biochemistry

A

Study of life at the molecular level

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2
Q

Chemistry?

A
  • Study of Matter
  • Chemical and Physical Properties
  • Chemical and Physical changes it undergoes
  • The energy changes that accompany those processes
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2
Q

energy

A

the ability to do work to accomplish some change

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3
Q

scientific method

A

systematic approach to the discovery of new information

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3
Q

Organic chemistry

A

study of matter containing carbon and hydrogen

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3
Q

scientific method

A

systematic approach to the discovery of new information

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4
Q

Characteristics of the scientific process:

A
  1. observation
  2. formulation of a question
  3. Pattern recognition
  4. Theory development
  5. Experimentation
  6. Information summarization
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5
Q

Inorganic chemistry

A

Study of matter containing elements, not organic (carbon/hydrogen)

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6
Q

common types of data

A 
mass 
length
volume
time
temperature
energy
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7
Q

states of matter

A

gas
liquid
solid

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8
Q

intensive property

A

property of matter that is independent of the quantity of the substance (temp (boiling point of water))

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8
Q

extensive property

A

depends on the quantity of a substance. (mass and volume)

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9
Q

precision

A

measure of the agreement of replicate measurements

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11
Q

random/systematic error

A

the difference between the true value and our estimation

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13
Q

kinetic energy

A

energy of motion

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15
Q

Color a physical or chemical property?

A

physical

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16
Q

flammability a physical or chemical property?

A

Chemical

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17
Q

Hardness a physical or chemical property?

A

Physical

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18
Q

Odor a physical or chemical property?

A

Physical

19
Q

Taste a physical or chemical property?

A

Physical

20
Q

What is the factor - label method and the Dimensional analysis?

A

methods for conversion

21
Q

when converting, what do you put in top?

A

what you want to convert to

22
Q

Label the following as a chemical or physical change?

puddle of water evaporates
food is digested
wood is burned

A

puddle of water - physical
food digested - chemical, partly physical with the chewing and pushing food down into stomach
wood is burned - chemical

23
Q

Label the following as intensive or extensive:
Specific gravity
temperature
heat content

A

specific gravity - intensive
temperature - intensive
heat content - extensive

24
Q

label each of the following as a pure or mixed substance:
sucrose (table sugar)
Orange Juice
Urine

A

sucrose - pure
orange juice - mixed
urine - mixed

25
Q

accuracy

A

the degree of agreement between the true value and measured value

26
Q

Method used for conversion?

A

factor-label method or dimensional analysis

27
Q

Matter

A

anything that has mass and takes up space; air included

28
Q

Physical Chemistry

A

attempts to explain the way matter behaves

29
Q

Properties are?

A

characteristics of matter (chemical vs physical)

30
Q

Results

A

outcome of an experiment

31
Q

Chemical reaction

A

process of rearranging, removing, replacing or adding atoms to produce a new substances

32
Q

Pure substance

A

substance that has only one component

33
Q

mixture

A

combination of 2 or more pure substances

34
Q

element

A

pure substance that cannot be changed into a simpler form of matter by any chemical reaction

35
Q

compound

A

substance resulting from the combination of 2 or more elements

36
Q

Homogeneous

A

uniform composition

37
Q

Heterogeneous

A

nonuniform composition

38
Q

Mass

A

quantity of matter in an object

39
Q

Weight

A

mass x acceleration due to gravity

40
Q

potential energy

A

energy of position (stored energy)

41
Q

Energy cannot be what?

A

created or destroyed

42
Q

Energy can?

A

be covered from 1 form to another, but always less than 100% efficiency

43
Q

1 calorie =

A

4.184 joules

44
Q

specific gravity

A

ratio of the density of object in question to density of pure water at 4degrees C

45
Q

what is the formula for specific gravity

A

density of object/ density of water

Chemistry (11 decks)

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