test 1

Question 1

3 sig fig rules

Answer 1

non zero digits are always significant
any zeros between 2 significant digits are always significant
a final zero or trailing zeros in the decimal portion only are significant

Question 2

atomic mass

Answer 2

number of protons and neutrons in the nucleus

Question 3

atomic number

Answer 3

number of protons in the nucleus//number of electrons surrounding the nucleus

Question 4

mole

Answer 4

the amount of substance that contains as many particles equal to the atomic weight

Question 5

avagadros number

Answer 5

6.02 x 10^23

Question 6

molar mass

Answer 6

number of atoms multiplied by the atomic weight