C3.1.5 - Half equations and ionic equations Flashcards
1
Q
What is a half equation?
A
A model for the change that happens to one reactant in a chemical reaction
2
Q
What are the 2 half equations for the equation:
2Na + Cl2 -> 2NaCl
A
Na -> Na+ + e-
Cl2 + 2e- -> 2Cl-
3
Q
What does a complete ionic equation show?
A
It shows the ions present in a reaction mixture
4
Q
What are spectator ions?
A
A charged particle present in a reaction mixture, but that does not take part in the reaction
5
Q
What is precipitation in chemistry?
A
A type of reaction in which a precipitate forms
