Question

you are given with a sample of 4 metal copper magnesium aluminium and sodium explain its reactivity with water or acid

Answer 1

reactivity with water...

1. Sodium react vigorously with cold water to produce sodium oxide and hydrogen gas.
which immediately catches fire.

2. Magnesium does not react with cold water but it react with hot wqter to produce magnesium oxide and hydrogen gas.

3.Aluminium does not react with hot water it react with steam.

4. copper does not react with water.

Na > Mg >Al > Cu

reactivity with acid...

1. sodium , magnesium and aluminum react with dilute acid.

2. copper does not react with acid

Na > Mg > Al > Cu