Chapter 2 - Atoms, Ions & Compounds, Chapter 3 - Amount Of Substance

Question 1

Isotopes

Answer 1

Different forms of the same element - same no of protons but diff no of neutrond

Question 2

Ions

Answer 2

Charged atoms

Question 3

Cations

Answer 3

Positive ions

Question 4

Anions

Answer 4

Negative ions

Question 5

Relative atomic mass

Answer 5

Ar - weighted mean mass of an atom of an element relative to 1/12th of the mass of a c-12 atom

Question 6

Relative isotopic mass

Answer 6

Mass of an isotope relative to 1/12th of the mass of C-12

Question 7

Phosphate ion

Answer 7

PO4(-3)

Question 8

Nitrite ion

Answer 8

NO2(-1)

Question 9

Sulfite ion

Answer 9

SO3(-2)

Question 10

Hydrogen carbonate ion

Answer 10

HCO3(-1)

Question 11

Zinc ion

Answer 11

Zn(+2)

Question 12

Silver ion

Answer 12

Ag(+1)

Question 13

Nitrates solubility

Answer 13

Always

Question 14

Chlorides solubility

Answer 14

All except silver and lead chloride

Question 15

Sulfates solubility

Answer 15

All except barium, strontium and lead sulfate

Question 16

Carbonates solubility

Answer 16

All insoluble except group 1 and ammonium carbonates

Question 17

Mole definition

Answer 17

Same number of particles as there are in 12g of C12

Question 18

Avogadro’s constant

Answer 18

No of particles in a mole
6.02 x 10(^23)

Question 19

What are hydrated salts

Answer 19

Compounds(salts) surrounded by molecules of water

Question 20

Water of crystallisation

Answer 20

Water part of hydrated molecules

Question 21

1cm^3 in ml

Answer 21

1 ml

Question 22

1 dm^3 in ml, l, cm^3

Answer 22

1000 cm^3
1000 ml
1l

Question 23

1m^3 in dm^3

Answer 23

1000dm^3

Question 24

Concentration of solution

Answer 24

Amount of solute dissolved in each 1 dm^3 of solution

Question 25

Standard solution

Answer 25

Solution of known concentration

Question 26

Molar gas volume

Answer 26

Volume per mol of gas molecules at stated room temp and pressure

Question 27

RTP

Answer 27

20C and 101kPa(1atm)

Question 28

Idéal gas equation

Answer 28

pV=nRT

Question 29

R

Answer 29

8.314