Reactivity series

1st (most reactive)

potassium

2nd

Sodium

3rd

Lithium (Li)

4rd

Calcium

5th

Magnesium

6th

Aluminium

7th

Carbon

8th

Zinc

9th

iron

12th

Hydrogen

13th

Copper

14th

Silver

15th

Gold

The way to remember the last four elements.

Medals going up in value: Copper - Silver - Gold -Platinum

Displacement reaction

A reaction in which a more reactive element displaces a less reactive element from an aqueous solution of the latter's ions.

Rust

the formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence of water

Lithium Hydroxide

Compound formed when lithium reacts with water

Potassium Hydroxide

Compound form when potassium reacts with water.

Noble gases

Group 8

Halogens

Group 7

The alkali metals

Group 1

Test for hydrogen

Squeaky pop test

Iron oxide

Compound name for rust

independent variable

The experimental factor that is changed; the variable whose effect is being studied.

dependent variable

The measurable effect, outcome, or response in which the research is interested.

control variable

VARIABLES THAT REMAIN CONSTANT OR UNCHANGED