Question

Give reasons: -
(a) Mixtures are impure substances .
(b) Carbondioxide is used in fire extinguishers.
(c) Steam causes more severe burns than boiling water
(d) Copper is used to make electrical wires.
(e) We should drink 3-4 litres water daily.​

Answer 1

Answer:

Explanation:

It consists of different elements and substances combined together physically in an unknown ratio.

Carbon dioxide extinguishes work by displacing oxygen, or taking away the oxygen element of the fire triangle.

steam has more energy than water at same temp i.e. 100 ℃ .

Steam use latent heat of vaporisation to get vapourisze and water don't have this energy.

copper is used to make electric wire Because it is a good conductor of heat and allows heat or electricity to pass through.

we should drink about 3-4 litres and start our day by taking 8 glasses of water to help the body to throw out the toxins.

Hope it helps..

Answer 2

Answer:

1. Because it contains various elements
2. Because it stops supplying O2
3. It has more temperature than boiled water
4. Copper is a good conductor of electricity
5. Drinking more water helps to flush out the toxic substances in our body.

hope it helps

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