atomic structure & isotopes, compounds formulae and equation and amount of substance ie 2.1.1 2.1.2 2.1.3

Question 1

ammonium

Answer 1

NH 4+

Question 2

silver

Answer 2

ag+

Question 3

zinc

Answer 3

zn 2+

Question 4

hydroxide

Answer 4

oh -

Question 5

nitrate (V)

Answer 5

NO 3-

Question 6

carbonate

Answer 6

co3 2-

Question 7

sulphate

Answer 7

so4 2-

Question 8

what is the atomic mass

Answer 8

protons+ neutrons

Question 9

atomic number

Answer 9

number of protons

Question 10

how do u calculate the Mr

Answer 10

relative molecular mass divided by relative formula mass

Question 11

Determine the water of crysallisation

Answer 11

Write the mass separately. 1. anhydrous salt 2. water
and divide it by its Mr
divide it by its smallest answer
find the smallest whole number ratio
then input back into formula

Question 12

2 ways the plum pudding is different from the current model

Answer 12

no nucleus
the electrons are in its shell
protons & neutrons are in its nucleus
most of the atom is empty shell

Question 13

describe the experiment that shows the plum pudding model is wrong

Answer 13

positively charged alpha particles He 2+ ions were fired at a very thin sheet of gold
if the plum pudding was right most alpha particles would be deflected
in reality they passed through the gold without deflection
the results indicated that the correct structure of the atom is
a small positively charged nucleus
surrounded by a cloud of negative electrons
most of the atom is empty space

Question 14

relative mass and charge for proton?

Answer 14

1 and +1

Question 15

relative mass and charge for neutron

Answer 15

1 and no charge

Question 16

relative mass and charge for electron

Answer 16

1/1840 and -1