Chemistry And Measurements

Front 1

mass

Back 1

quantity of matter

Front 2

matter

Back 2

anything that occupies space

Front 3

law of conservation of z

Back 3

mass remains constant during a chemical change (chemical reaction)

Front 4

weight

Back 4

force of gravity exerted on matter

Front 5

experiment

Back 5

observation of natural phenomena carried out in a controlled manner so that the result can be duplicated and rational conclusions obtained

Front 6

law

Back 6

concise statement or mathematical equation about a relationship or regularity in nature

Front 7

hypothesis

Back 7

tentative idea or explanation about some aspect of nature

Front 8

theory

Back 8

tested explanation of natural phenomena

Front 9

scientific method

Back 9

the creative process of understanding the physical world that involves hypothesis formation, experimentation, modification of theory followed by more experimentation.

Front 10

unit

Back 10

fixed standard of measurement

Front 11

precision

Back 11

agreement among measured values of a quantity

Front 12

accuracy

Back 12

agreement of a measured value with the true value

Front 13

number of significant figures

Back 13

number of digits reported for the value of a measured or calculated quantity, indicating the precision of the value

Front 14

scientific notation

Back 14

method of writing numbers in the form A x 10n where A is a number with a single nonzero digit to the left of the decimal point and n is the whole number

Front 15

rounding

Back 15

dropping nonsignificant digits in a calculation result and adjusting the last digit reported

Front 16

metric system

Back 16

decimal set of weights and measures

Front 17

International System (SI)

Back 17

group of metric units internationally accepted in 1960 as the standard units of scientific measurement

Front 18

SI base units

Back 18

SI units from which all others can be derived

Front 19

SI prefixes

Back 19

a group of letters placed in front of the SI unit to indicate a power of 10

Front 20

meter (m)

Back 20

SI base unit of length

Front 21

angstrom (A)

Back 21

traditional non-SI unit of length (1 A = 10 -10 m)

Front 22

kilogram (kg)

Back 22

SI base unit of mass (about 2.2 lb)

Front 23

second (s)

Back 23

SI base unit of time

Front 24

Celsius scale

Back 24

temperature scale in general scientific use, in which there are exactly 100 units between the freezing and boiling points of water

Front 25

kelvin (K)

Back 25

SI base unit of temperature

Front 26

absolute temperature

Back 26

temperature reported using a scale on which the lowest point that can be attained theoretically is zero

Front 27

dimensional analysis (factor-label method)

Back 27

method of calculation that includes the units for quantities and treats them as numbers

Front 28

conversion factor

Back 28

ratio equivalent to 1 that converts a qty expressed in one unit to one expressed in another unit

Front 29

area

Back 29

length times length

Front 30

speed

Back 30

rate of change of distance with time

Front 31

SI derived units

Back 31

units derived by combining SI base units

Front 32

volume

Back 32

length cubed

Front 33

liter (L)

Back 33

traditional unit of volume (1 L = 1 dm3)

Front 34

density

Back 34

mass per unit volume

Front 35

pressure

Back 35

force exerted per unit area of surface

Front 36

pascal (Pa)

Back 36

SI unit of pressure
(1 Pa = 1 kg / (m*s2))

Front 37

atmosphere (atm)

Back 37

traditional unit of pressure
(1 atm = 101.325 kPa, exact)

Front 38

millimeters of mercury (mmHg)

Back 38

traditional unit of pressure
(760 mmHg = 101.325 kPa, exact)

Front 39

torr

Back 39

alternate term for mmHg

Front 40

energy

Back 40

capacity to move matter (do work)

Front 41

kinetic energy

Back 41

energy assoc with an object or particle by virtue of its motion

Front 42

potential energy

Back 42

energy of a stationary object or particle by virtue of its position

Front 43

joule (J)

Back 43

Si unit of energy (1 J = 1 kg*m2/s2)

Front 44

erg

Back 44

metric unit of energy (1 erg = 10-7 J)

Front 45

watt

Back 45

qty of energy used per unit time
(1 watt = 1 J/s)

Front 46

calorie (cal)

Back 46

traditional non-SI unit of energy
(1 cal = 4.184 J, exact)

Front 47

heat

Back 47

energy in transit from a hotter object to a colder one

Front 48

specific heat capacity (specific heat)

Back 48

qty of heat required to raise the temperature of one gram of matter by one degree Celsius (or by one kelvin)

Front 49

law of conservation of energy

Back 49

energy may be converted from one form to another, but the total qty of energy remains constant

Front 50

mega M

Back 50

10x6

Hint 50

SI Prefix

Front 51

kilo k

Back 51

10x3

Hint 51

SI Prefix

Front 52

deci d

Back 52

10x-1

Hint 52

SI Prefix

Front 53

centi c

Back 53

10x-2

Hint 53

SI Prefix

Front 54

milli m

Back 54

10x-3

Hint 54

SI Prefix

Front 55

micro u

Back 55

10x-6

Hint 55

SI Prefix

Front 56

nano n

Back 56

10x-9

Hint 56

SI Prefix

Front 57

pico p

Back 57

10x-12

Hint 57

SI Prefix

Front 58

K converstion to Celsius

Back 58

K=C +273.15

Front 59

F conversion to Celsius

Back 59

F=(1.8 x C) +32

Front 60

C conversion to Fahrenheit

Back 60

C= F-32/1.8

Front 61

Area (length squared)

Back 61

m2

Hint 61

Derived Units

Front 62

Volume (length cubed)

Back 62

m3

Hint 62

Derived Units

Front 63

Density (mass per unit volume)
D=m/v

Back 63

kg/m3

Hint 63

Derived Units

Front 64

Speed (Distance traveled per unit time)

Back 64

m/s

Hint 64

Derived Units

Front 65

Acceleration (speed changed per unit time)

Back 65

m/s2

Hint 65

Derived Units

Front 66

Force (mass times acceleration of object)

Back 66

kg * m/s2 (=newton, N)

Hint 66

Derived Units

Front 67

Pressure (force exerted per unit area)

Back 67

kg/(m*s2) (=pascal, Pa)

Hint 67

Derived Units

Front 68

Energy (force times distance traveled)

Back 68

kg * m2/s2 (=joule, J)

Hint 68

Derived Units