Question

Question 5
a) Give reasons for the following:
(i) FeS is a compound whereas Fe and S are elements.
(n) Chemistry is essential for human life.
(iii) Test tubes are made of glass.
(iv) Practicals are very important in Chemistry
(v) Gas molecules move freely in all directions in all directions


Please help me​

Answer 1

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Answer 2

Explanation:

1 when iron and sulphur powder are heated they form FeS which is a compound as compound is made up of two or more elements chemically combined together

2 Chemistry is important because it helps to build our body system. It helps us in our daily activities... and is also important because it helps us to know how to take good care of our health.

3 Test tubes, intended for general chemical work are usually made of glass, for better resistance to heat and corrosive chemicals and longer life. Tubes made from expansion-resistant glasses, mostly borosilicate glass (or fused quartz) can withstand high temperatures, up to several hundred degrees Celsius.

4 Particle theory is important because it contains the key components to understanding matter. It defines all matter as made up of tiny particles

5 gas particles have less force of attraction between them so they are able to move in all directions

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