Terms Flashcards
When oxygen is gained, it is called _____________
Oxidisation (or it is oxidised) and you also lose electrons. The opposite is reduction
What is a displacement reaction:
When a more reactive metal displaces a less reactive metal. Can also be known as a reduction reaction and is a redox reaction (when one reactant is oxidised and one is reduced)
How to test for hydrogen:
Catch any gas in a test tube and light a splint. Put the splint in the bottom of the test tube. If there is a pop, there is hydrogen.
What makes an element more/less reactive:
How easily it turns into an ion. The easier, the more reactive
Define ion:
An element that has lost or gained an electron
More reactive metals are normally found as an _____
Ore
(S), (l), (g), (aq):
Solid, liquid, gas, aqueous (dissolved in water)
To help balance equations, use _______
Pictures of atoms underneath
Define ore:
An ore is a metal compound in rock with economic value to extract
To neutralise an acid or alkali of the same pH _______ amount of _________
The same, each
H+ + OH-
H2O
Define concentration:
How many acid particles there are
Define pH:
How many hydrogen ions there are in a solution. More = more
As the pH decreases by _______, the concentration of hydrogen ions increases by ___________
One unit, a factor of 10, eg. 0.001 (conc) = 1x10^-3 (f of 10) = pH 3
How are non-reactive metals extracted:
They are found in their native state
