key stuff

Question 1

ammonium ion

Answer 1

NH₄⁺

Question 2

silver ion

Answer 2

Ag⁺

Question 3

zinc ion

Answer 3

Zn²⁺

Question 4

hydroxide ion

Answer 4

OH⁻

Question 5

nitrate (V) ion

Answer 5

NO₃⁻

Question 6

carbonate ion

Answer 6

CO₃²⁻

Question 7

sulphate (VI)

Answer 7

SO₄²⁻

Question 8

what affect the chemical properties of a species

Answer 8

number of electrons

Question 9

diatomic molecules

Answer 9

H₂ helium
N₂ nitrogen
F₂ fluorine
O₂ oxygen
I₂ iodine
Cl₂ chlorine
Br₂ bromine

Question 10

what does -ide mean

Answer 10

it’s an anion on its own

Question 11

what does -ate mean

Answer 11

it’s a compound anion including oxygen

Question 12

1 tonne in g

Answer 12

10⁶g

Question 13

m³ to cm³

Answer 13

x10⁶

Question 14

dm³ to cm³

Answer 14

x10³

Question 15

unit prefixes: 10³ to 10⁻³

Answer 15

k: 10³
h: 10²
da: 10¹
–: 10⁻⁰
d: 10⁻¹
c: 10⁻²
m: 10⁻³

Question 16

unit prefixes ≤10⁻³

Answer 16

m: 10⁻³
μ: 10⁻⁶
n: 10⁻⁹
p: 10⁻¹²

Question 17

celsius to kelvin

Answer 17

C = K + 273

Question 18

what type of substances will polar molecules dissolve in

Answer 18

polar substances

Question 19

what type of substances will nonpolar molecules dissolve in

Answer 19

nonpolar substances

Question 20

reactions can either be

Answer 20

redox or neutralisation