Question

5.
Make sentences expressing purpose using the
given hints
(a) a catalyst: speeds up a chemical process
(b)
a clamp: holds two things firmly together​

Answer 1

Answer:

your ans

Explanation:

1) A sentence increase the rate of an chemical reaction without itself undergoing any chemical change

eg: Chlorine acts as a catalyst promoting the breakdown of ozone

2) Clamp: He clamp the two pieces of wood together

Answer 2

a) The purpose of a catalyst is to speed up a chemical process.

b) The purpose of a clamp is to hold two things firmly together.

About sentences expressing purpose:

• There are two terms given and we have form sentences denoting the purpose/ usage given.
• When we have to write its purpose, it is necessary to give the word 'purpose of' or 'use of' to make it clear.
• For Q(a), we have the term 'catalyst' and the usage of it given.  So we must use the term 'purpose/ use of'.
• Thus the answer is: The purpose of a catalyst is to speed up a chemical process. (Or) The use of a catalyst is to speed up a chemical process.
• For Q(b), we have the term 'clamp' and the usage given.  Thus the answer for this is: The purpose of a clamp is to hold two things firmly together. (Or) The use of a clamp is to hold two things firmly together.