Chapter 1

Question 1

Biochemistry

Answer 1

Study of life at the molecular level

Question 2

Chemistry?

Answer 2

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

Question 2

energy

Answer 2

the ability to do work to accomplish some change

Question 3

scientific method

Answer 3

systematic approach to the discovery of new information

Question 3

Organic chemistry

Answer 3

study of matter containing carbon and hydrogen

Question 3

scientific method

Answer 3

systematic approach to the discovery of new information

Question 4

Characteristics of the scientific process:

Answer 4

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

Question 5

Inorganic chemistry

Answer 5

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

Question 6

common types of data

Answer 6

mass 
length
volume
time
temperature
energy

Question 7

states of matter

Answer 7

gas
liquid
solid

Question 8

intensive property

Answer 8

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

Question 8

extensive property

Answer 8

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

Question 9

precision

Answer 9

measure of the agreement of replicate measurements

Question 11

random/systematic error

Answer 11

the difference between the true value and our estimation

Question 13

kinetic energy

Answer 13

energy of motion

Question 15

Color a physical or chemical property?

Answer 15

physical

Question 16

flammability a physical or chemical property?

Answer 16

Chemical

Question 17

Hardness a physical or chemical property?

Answer 17

Physical

Question 18

Odor a physical or chemical property?

Answer 18

Physical

Question 19

Taste a physical or chemical property?

Answer 19

Physical

Question 20

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

Answer 20

methods for conversion

Question 21

when converting, what do you put in top?

Answer 21

what you want to convert to

Question 22

Label the following as a chemical or physical change?

puddle of water evaporates
food is digested
wood is burned

Answer 22

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

Question 23

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

Answer 23

specific gravity - intensive
temperature - intensive
heat content - extensive

Question 24

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

Answer 24

sucrose - pure orange juice - mixed urine - mixed

Question 25

accuracy

Answer 25

the degree of agreement between the true value and measured value

Question 26

Method used for conversion?

Answer 26

factor-label method or dimensional analysis

Question 27

Matter

Answer 27

anything that has mass and takes up space; air included

Question 28

Physical Chemistry

Answer 28

attempts to explain the way matter behaves

Question 29

Properties are?

Answer 29

characteristics of matter (chemical vs physical)

Question 30

Results

Answer 30

outcome of an experiment

Question 31

Chemical reaction

Answer 31

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

Question 32

Pure substance

Answer 32

substance that has only one component

Question 33

mixture

Answer 33

combination of 2 or more pure substances

Question 34

element

Answer 34

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

Question 35

compound

Answer 35

substance resulting from the combination of 2 or more elements

Question 36

Homogeneous

Answer 36

uniform composition

Question 37

Heterogeneous

Answer 37

nonuniform composition

Question 38

Mass

Answer 38

quantity of matter in an object

Question 39

Weight

Answer 39

mass x acceleration due to gravity

Question 40

potential energy

Answer 40

energy of position (stored energy)

Question 41

Energy cannot be what?

Answer 41

created or destroyed

Question 42

Energy can?

Answer 42

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

Question 43

1 calorie =

Answer 43

4.184 joules

Question 44

specific gravity

Answer 44

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

Question 45

what is the formula for specific gravity

Answer 45

density of object/ density of water