Year 9 end of year test part 2 Flashcards
How are ions formed?
Loss or gain of electrons in the outer shell, leading to a full outer shell.
Why are group zero unreactive?
They already have full outer shells
ionic bonding is…
the bond formed from the strong electrostatic attraction between positive or negative ions.
oxidation is
loss of electrons
reduction is
gain of electrons
giant ionic lattices have high melting and boiling points because
the bonds are strong and require a lot of energy to break
Elements are
Substances of one type of atom
Mixtures are
multiple substances mixed but not bonded together
Compounds are
multiple elements chemically bonded together
Metals are
conductive and turn into oxides
Non-metals are
Insulators and turn into dioxides
Metals are where on the periodic table
the left
Non-metals are where on the periodic table
the right
Solvent
A liquid a substance dissolves in
Solute
A substance dissolving in a liquid
Solution
a liquid a substance has already dissolved in
Saturated
used to describe a solution when no more solute can dissolve
Solubility
The amount of solute that can dissolve in a solvent at a certain temperature in grams per 100 grams
Sodium, Potassium, Ammonium and Nitrates
Soluble
Chlorides
Soluble except silver and lead
Sulphates
Soluble except for barium calcium and lead
carbonates
insoluble except for sodium potassium and ammonium
hydroxides
insoluble except for sodium potassium and calcium
