Chapter2:analyzing data

Question 1

When does water boil on kelvin scale

Answer 1

373

Question 2

when does water freeze in kelvin scale

Answer 2

273

Question 3

Celsius boiling point

Answer 3

100

Question 4

celsius freezing point

Answer 4

0

Question 5

fahrenheit boiling

Answer 5

212

Question 6

fahrenheit freezing

Answer 6

32

Question 7

Celsius to kelvin

Answer 7

k=c+273.15

Question 8

fahrenheit to c

Answer 8

c=5/9(f-32)

Question 9

How to find density

Answer 9

v=l x w x h

or water displacement

Question 10

conversion factors

Answer 10

a ratio of 2 quantities that have different units

Question 11

accuracy def

Answer 11

how close are you to the real value

Question 12

recision def

Answer 12

how repeatable the measurements are

Question 13

percent error

Answer 13

(experimental-actual)/actual=x

x times 100

Question 14

measurement def

Answer 14

quantitative observation consisting of 2 parts

number and unit

Question 15

sig fig rules

Answer 15

non zero integers always count
leading 0s to non zeros do not count
captive zeros count
trailing 0s count if there is a decimal

Question 16

Scientific notation

Answer 16

positive exponant= big number

negative exponant= small number

Question 17

how to seperat mixtures

Answer 17

filter
distilation
-if the two substances have different boiling points
crystalization
suplimation
chromotogrophy

Question 18

Law of definate properties

Answer 18

compounds contain the exact same properties regardless of sample size or source

Question 19

law of multiple proportions

Answer 19

when multiple compounds are formed between 2 elements, the rations of the masses of each element in each compound will be whole numbers or multiples of eachother

Question 20

law of conservation of mass

Answer 20

mass does not change during a chemical reaction