Introduction and measurments

Question 1

Matter

Answer 1

Anything that has mass and occupies space

Question 2

What is Chemistry

Answer 2

the study of the composition of matter and the changes it undergoes

Question 3

How many areas of study are there

Answer 3

5

Question 4

Organic chemistry

Answer 4

The study of chemicals that contain carbon

Question 5

Inorganic chemistry

Answer 5

The study of chemicals that do not contain carbon

Question 6

Biochemistry

Answer 6

The study of living things and the processes that take place within them

Question 7

Analytical Chemistry

Answer 7

the study of the composition of matter

Question 8

physical chemistry

Answer 8

the study of the mechanism, rate and the energy transfer that occurs when matter undergoes a change

Question 9

how many SI base units are there

Answer 9

7

Question 10

base unit of length

Answer 10

meter

Question 11

Space taken up by a cube that is 10cm on each side

Answer 11

one liter

Question 12

what is weight

Answer 12

measure of the pull of gravity on an object of given mass

Question 13

the mass of one cubic centimeter of water at 4 degrees celcius is

Answer 13

one gram

Question 14

density

Answer 14

ration of mass of an object to its volume

Question 15

What does density depend on

Answer 15

composition of a substance

Question 16

what does kilo mean

Answer 16

1000 times larger

Question 17

what does pico mean

Answer 17

1 trillion times smaller

Question 18

what does micro mean

Answer 18

1 million times smaller

Question 19

what does centi mean

Answer 19

100 times smaller

Question 20

what does milli mean

Answer 20

1000 times smaller

Question 21

what does nano mean

Answer 21

1 billion times smaller

Question 22

what does deka mean

Answer 22

10 timeslarger

Question 23

what does mega mean

Answer 23

1 million times larger

Question 24

what does hecto mean

Answer 24

100 times larger

Question 25

what does deci mean

Answer 25

10 times smaller

Question 26

What is the first rule of significant figures

Answer 26

All non zero digits in a measured number are significant

Question 27

what is the second rule of significant figures

Answer 27

leading zeros in a decimal number are not significant
example:.008 has one significant figure

Question 28

what is the third rule of significant figures

Answer 28

zeros between non zero numbers are significant
example: 50.8 has 3 significant figures

Question 29

what is the fourth rule of significant figures

Answer 29

trailing zeros in a number without decimals are not significant
example: 25,000 has two significant figures (2 and 5)