chapter 2

Question 1

what is the relative atomic mass?

Answer 1

the weighted mean mass of an atom compared with 1/12th of the mass of carbon-12

Question 2

what is the relative isotopic mass?

Answer 2

the mass of an isotope compared with 1/12th of the mass of an atom of carbon-12

Question 3

what is an isotope?

Answer 3

same atom with different number of neutrons

Question 4

what are positive ions called?

Answer 4

cations

Question 5

what are negative ions called?

Answer 5

anions

Question 6

what are the stages of a mass spectrometer?

Answer 6

ionisation (made into positive ions as an electron is knocked off)
acceleration (accelerated to same kinetic energy)
drift region (heavier ions move slower)

Question 7

how do you work out the charges of metal ions?

Answer 7

always positive
roman numeral

Question 8

what is phosphorus always?

Answer 8

there is always 4 phosphorus atoms

Question 9

nitrate (V)

Answer 9

NO3 -

Question 10

silver

Answer 10

Ag +

Question 11

carbonate

Answer 11

CO3 2-

Question 12

sulphate (VI)

Answer 12

SO4 2-

Question 13

ammonium

Answer 13

NH4 +

Question 14

zinc

Answer 14

Zn 2+

Question 15

hydroxide

Answer 15

OH -