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Flashcards in Chapter 1 Deck (46):
1

Biochemistry

Study of life at the molecular level

2

Chemistry?

-Study of Matter
-Chemical and Physical Properties
-Chemical and Physical changes it undergoes
-The energy changes that accompany those processes

2

energy

the ability to do work to accomplish some change

3

scientific method

systematic approach to the discovery of new information

3

Organic chemistry

study of matter containing carbon and hydrogen

3

scientific method

systematic approach to the discovery of new information

4

Characteristics of the scientific process:

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

5

Inorganic chemistry

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

6

common types of data

mass
length
volume
time
temperature
energy

7

states of matter

gas
liquid
solid

8

intensive property

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

8

extensive property

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

9

precision

measure of the agreement of replicate measurements

11

random/systematic error

the difference between the true value and our estimation

13

kinetic energy

energy of motion

15

Color a physical or chemical property?

physical

16

flammability a physical or chemical property?

Chemical

17

Hardness a physical or chemical property?

Physical

18

Odor a physical or chemical property?

Physical

19

Taste a physical or chemical property?

Physical

20

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

methods for conversion

21

when converting, what do you put in top?

what you want to convert to

22

Label the following as a chemical or physical change?

puddle of water evaporates
food is digested
wood is burned

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

23

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

specific gravity - intensive
temperature - intensive
heat content - extensive

24

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

sucrose - pure
orange juice - mixed
urine - mixed

25

accuracy

the degree of agreement between the true value and measured value

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Method used for conversion?

factor-label method or dimensional analysis

27

Matter

anything that has mass and takes up space; air included

28

Physical Chemistry

attempts to explain the way matter behaves

29

Properties are?

characteristics of matter (chemical vs physical)

30

Results

outcome of an experiment

31

Chemical reaction

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

32

Pure substance

substance that has only one component

33

mixture

combination of 2 or more pure substances

34

element

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

35

compound

substance resulting from the combination of 2 or more elements

36

Homogeneous

uniform composition

37

Heterogeneous

nonuniform composition

38

Mass

quantity of matter in an object

39

Weight

mass x acceleration due to gravity

40

potential energy

energy of position (stored energy)

41

Energy cannot be what?

created or destroyed

42

Energy can?

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

43

1 calorie =

4.184 joules

44

specific gravity

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

45

what is the formula for specific gravity

density of object/ density of water