Vocab

Question 1

the science that deals with the materials of the universe and the changes that these materials undergo

Answer 1

chemistry

Question 2

the process that lies at the center of scientific inquiry

Answer 2

scientific method

Question 3

a set of tested hypotheses that gives an overall explanation of some part of nature

Answer 3

theory

Question 4

a statement that expresses generally observed behavior

Answer 4

natural law

Question 5

a quantitative observation

Answer 5

measurement

Question 6

expresses a number in the form of N X 10 to the power of M

Answer 6

scientific notation

Question 7

part of a measurement that tells us what scale or standard is being used to represent the results of the measurement

Answer 7

unit

Question 8

the measurement system used by many countries including the United States using feet, pounds, and seconds

Answer 8

English system

Question 9

the measurement used in most of the world using meter, liter, and gram

Answer 9

metric system

Question 10

a comprehensive system of units that are based on the metric system and units derived from the metric system

Answer 10

SI units

Question 11

the amount of three-dimensional space occupied by a substance

Answer 11

volume

Question 12

the quantity of matter present in an object

Answer 12

mass

Question 13

the numbers recorded in a measurement (all the certain numbers plus the first uncertain number)

Answer 13

significant figures

Question 14

reducing a number to fewer digits

Answer 14

rounding off

Question 15

a ratio of the two parts of the statement that relates the two units

Answer 15

conversion factor

Question 16

a statement that relates two different units of measurements

Answer 16

equivalence statement

Question 17

changing from one unit to another via conversion factors (based on the equivalence statements between the units)

Answer 17

dimensional analysis

Question 18

the temperature scale on which water freezes at 32 degrees and boils at 212 degrees

Answer 18

Fahrenheit scale

Question 19

the temperature scale on which water freezes at 0 degrees and boils at 100 degrees

Answer 19

Celsius scale

Question 20

the preferred temperature scale in scientific work, where water freezes at 273 K and boils at 373 K

Answer 20

Kelvin (absolute) scale

Question 21

the amount of matter present in a given volume of a substance

Answer 21

density

Question 22

the ratio of the density of a given liquid to the density of water at 4 degrees C; used to describe the density of a liquid

Answer 22

specific gravity