Physical 1

Question 1

symbol for mass number

Answer 1

A

Question 2

symbol for atomic number

Answer 2

Z

Question 3

Avogadros constant = (2 equations)

Answer 3

L = 1/mol
L = Mr/mass (g)

Question 4

RAM =

Answer 4

RAM = ((abundance x mass/charge) + (abundance x mass/charge)) / sum of mass/charge

Question 5

electron config for Cr

Answer 5

1s2, 2s2, 2p6, 3s2, 3p6, 3d5, 4s1,

Question 6

electron config for Cu

Answer 6

1s2, 2s2, 2p6, 3s2, 3p6, 3d10, 4s1

Question 7

1st ionisation energy…

Answer 7

the energy required to remove 1 mol of electrons from 1 mol of gaseous atoms to form 1 mol of gaseous 1+ ions.

Question 8

1st ionisation energy equation =

Answer 8

X(g) -> X(g) + 1e-

Question 9

coordinate bonding

Answer 9

A lone pair of electrons are donated from one atom to the vacant orbital of another atom which can be a metal or non-metals

Question 10

mol =

Answer 10

mol = conc x vol
mol = mass/mr
mol = no. of particles/L

Question 11

%uncertanty =

Answer 11

%uncertanty = uncertanty/ value x 100

Question 12

atom economy =

Answer 12

atom economy = mr of desired product/sum of mr of all reactants x 100

Question 13

% yield =

Answer 13

% yield = actual yield/ theoretical yield x 199

Question 14

yield =

Answer 14

yield = mr x mol