Chemical reactions Flashcards
Oxidisation numbers tell you
The number of electrons that have been gained or lost
A element in its natural state has the oxidisation number of
0
Oxidisation is….. Of electrons
Loss
Reduction is…. Of electrons
Gain
The products of combustion are
Carbon dioxide and water
The word equation for neutralisation is
Acid + bass = salt + water
Name three things that will increase the rate of reaction
An increase in temperature, an increase in concentration, and the addition of a catalyst
What is produced in a precipitations reaction
A solid from two liquids
What is always present in a combustion reaction
Oxygen
The products of combustion reactions are
Carbon dioxide and water
Metal displacement reactions are
When 2 metals swap places ( that’s what it said in the book)
A 4 on the pH scale would be? (Acidic or basic)
Acidic
