C4 — Chemical Changes Flashcards
What does the ph level go from
0 - 14
What do acids and bases do
They neutralise each other
What do acids produce in water
Protons
What is ph measured in
Concentration of hydrogen atoms
Give 2 examples of bases
Metal oxides and metal hydroxides
What do acids and metal carbonates produce
Carbon dioxide
What can you make soluble salts from
Insoluble bases
What is a redox reaction
When electrons are transferred
What do ionic equations show
The useful parts of the equation
What does electrolysis mean
Splitting it up with electricity
What does electrolysis of molten ionic substances form
Elements
What can metals be extracted from using electrolysis
Their ores
What happens in an exothermic reaction
Heat is given out
What happens in an endothermic reaction
Heat is taken in
What’s does reaction profiles show
Energy changes
