Chemical Reactions

Question 1

Neutralization Reaction

Answer 1

Acid + Base ➡ Salt + Water

Question 2

What is an Alkali?

Answer 2

A soluble base

Question 3

What causes Acidity?

Answer 3

Hydronium Ion (H₃O⁺) (a.k.a H⁺)

Question 4

What does Aqueous mean?

Answer 4

Dissolved in water

Question 5

Simple Redox

Answer 5

A reaction where both oxidation and reduction take place

Question 6

What is Oxidation?

Answer 6

The loss of electrons

Question 7

What is Reduction?

Answer 7

The gain of electrons

Question 8

Ethanoic Acid

Answer 8

CH₃COOH

Question 9

Nitric Acid

Answer 9

HNO₃

Question 10

Hydrochloric Acid

Answer 10

HCl

Question 11

Sulfuric Acid

Answer 11

H₂SO₄

Question 12

Metal + Acid ➡

Answer 12

Metal Salt + Hydrogen

Question 13

Metal Oxide + Acid ➡

Answer 13

Metal Salt + Water

Question 14

Metal Carbonate + Acid ➡

Answer 14

Metal Salt + Water + Carbon Dioxide

Question 15

Chloride

Answer 15

Cl-

Question 16

Nitrate

Answer 16

NO₃-

Question 17

Sulphate

Answer 17

SO₄²-

Question 18

Ethanoate

Answer 18

CH₃COO-

Question 19

What are diatomic elements?

Answer 19

Elements which only exist as covalently bonded pairs

Question 20

What are the diatomic elements?

Answer 20

Br, I, N, Cl, H, O, F

Question 21

Decomposition Reaction

Answer 21

One reactant breaks down into two (or more) products (AB → A + B)

Question 22

Single Displacement (Replacement)

Answer 22

One element (reactant) is substituted for another in a compound (reactants are always a pure element + an aqueous compound) (A + BC → B + AC)

Question 23

Double Displacement (Replacement)

Answer 23

Two ionic compounds are exchanged, forming two new compounds (often forms a precipitate) (AB + CD → AD + CB)

Question 24

Combination (Synthesis) Reaction

Answer 24

Two (or more) reactants combine to form a single product (A + B → AB)

Question 25

What defines a Chemical Reaction?

Answer 25

Bond Breaking Bond Re-arrangement Bond Formation

Question 26

What is a Catalyst?

Answer 26

A catalyst provides an alternative reaction pathway, with a lower activation energy.

Question 27

Collision Theory

Answer 27

For a reaction to occur, reactant particles must collide with each other, collide with sufficient energy, and collide with the correct orientation.

Question 28

Activation Energy

Answer 28

The minimum energy that a collision must possess for a reaction to occur.

Question 29

Transition State

Answer 29

Occurs at the stage of maximum potential energy in a reaction where bond-breaking and bond-forming happens and when atoms are unstable.

Question 30

Haber Process

Answer 30

Hydrogen and Nitrogen gas is converted into Ammonia. N₂ + 3H₂ → 2NH₃