Mention two factors that affect the melting point of a substance. – NABTEB QUESTION by Sunday | Oct 8 | NABTEB QUESTIONS | 0 comments The two factors are: i. Prevailing pressure ii. Purity of the substance Users Also Read These:Mention TWO ways of caring for the teeth. - NABTEB QUESTIONMention and explain three factors that can lead to…Define and give an example each of the following: i.…Mention TWO output devices you are aware of - NABTEB…The presence of an impurity in substance will cause…