Chemistry SS 2

1

2

The most reactive halogen is _____ 

Answer:       Flourine

2

2

______ energy is the minimum energy particles must possess for them to react

Answer:   Activation (Energy)

3

2

Which ion is the reducing agent in

Cl₂ + 2KI  = 2KCl + I₂

Answer:       I^- or Iodine ion

4

2

Calculate the mass of 3 moles of water.

[H = 1, O = 16]

Answer:     54 g

5

2

What is the atomicity of phosphorus under normal conditions?

Answer: 4 or tetra-atomic