A

Question 1

Endothermic

Answer 1

Energy is absorbed
Heat (energy) taken in
Temperature of the substance drops
Products feel COLD

Question 2

Endothermic Reaction

Answer 2

REACTANTS + ENERGY -> PRODUCTS
or
REACTANTS + HEAT PRODUCTS

Question 3

Exothermic

Answer 3

Energy Released
Heat (energy) given off
Temperature of the substance rises
Products feel HOT

Question 4

Exothermic Reactions

Answer 4

REACTANTS -> PRODUCTS + ENERGY

Question 5

Enthalpy

Answer 5

Enthalpy (H) is the total amount of energy in a substance
ΔH is the change in enthalpy of a chemical reaction

Question 6

Electronegativity

Answer 6

The ability of an atom to attract electrons

Question 7

Ionisation energy

Answer 7

The ability of an atom to hold electrons

Question 8

First ionisation energy

Answer 8

Minimum amount of energy required to remove the most loosely bound electron from an atom in gaseous state

Question 9

Ionisation energy trends

Answer 9

Increases with Increasing Nuclear Charge
Decrease with increasing Atomic Radius