Question

2.2 What happens
Activity 3.10
CAUTION: This Activity needs the teacher's assistance.
Collect the samples of the same metals as in Activity 3.0
Put small pieces of the samples separately in beakers hoc
with cold water.
Which metals reacted with cold water? Arrange them in
increasing order of their reactivity with cold water.
Did any metal produce fire on water?
Does any metal start floating after some time?
Put the metals that did not react with cold water in beakes
half-filled with hot water
For the metals that did not react with hot water, arrange to
apparatus as shown in Fig. 3.3 and observe their reaction with stear
Which metals did not react even with steam?
Arrange the metals in the decreasing order of reactivity with war​

Answer 1

Explanation:

calcium is react with cold water

sodium and potassium produce fire on water

magnesium start floating after some time