Types Of Reaction Flashcards
Acid + base
Salt + water
Acid + metal carbonate
Salt +water +Carbon dioxide
Acid + metal
Salt + hydrogen
Acid + metal oxide (base)
Salt +water
Names examples of salts
Sodium chloride, potassium chloride, calcium sulfate
Define an oxidation reaction
A substance gains oxygen
Define a reduction reaction
When a substance loses oxygen
What is combustion
A chemical reaction between a fuel and an oxidising agent, normally oxygen. That is exothermic. The release of heat often produces light.
What is thermal decomposition?
A substance is broken down chemically using heat to make 2 or more substances
Define what happens to a mass of a compound during thermal decomposition
The mass decreases because gas escapes
Are metal oxides acidic or alkaline?
Alkaline
Are non metal oxides acid. Or alkaline?
Acidic
What is the negative electrode called in electrolysis?
A cathode
What is the negative ion called?
Anion
What is the positive electrode in electryolysos?
Anode
What is a positive ion called?
Cation
What is electrolysis?
When a high electric current is passed through a substance to separate it
What is a physical change?
When no new substance is formed and the change is reversible
What is a chemical change?
Is an irreversible change where a new substance is formed
What are signs of a chemical change?
Change in colour, fizzing or bubbling, temperature change, sound or light produced, a solid produce and a gain or loss of mass
What are the signs of a physical change?
State change
