Chemical Reactions

Question 1

What is a Chemical Reaction?

Answer 1

A Chemical Reaction when 2 or more sets of Atoms/Chemicals bond together to form a a Product/Compound. The same amount if atoms are in the Products as there are in the Reactants.

Question 2

How can you tell if a chemical Reaction has taken place?

Answer 2

Smell
Bubbling/Fizzing
Changes in energy
Glow or change of colour 
Gas is given off substance

Question 3

Layout of a Word Equation:

Answer 3

……………+……………—>……………

Reactants Products

Question 4

Type of Metal + Oxygen —>

Answer 4

………… Oxide

Question 5

Endothermic Reaction

Answer 5

When something takes in heat during a reaction.

Question 6

Exothermic Reaction

Answer 6

When heat is given off a substance in a chemical Reaction.

Question 7

How can you speed up chemical reactions?

Answer 7

You can use catalysts. Different types of Catalysts are used for different types of reactions.

Question 8

Reaction which involve oxygen

Answer 8

Oxidation reaction.

Question 9

The results of burning fossil fuels is…

Answer 9

Global Warming. One day the world will run out of fossil fuels and will have to find other ways to power things.

Question 10

Products Always have the same mass as the reactants.

Answer 10

TRUE