Question

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Q1: Suggest why the sand remains in the filter paper.

Q2:What safety precautions should you take when heating the salt water?​

Answer 1

Answer:

♦The filter paper acts as a sieve separating the particles by size. Small particles flow through the tiny holes of the filter paper while large particles become trapped. When mixed with water the salt dissolves while the sand remains as a solid. We say the sand is insoluble

♦Precautions When Working with Sodium Chloride

Work area should have sufficient exhaust ventilation. Regularly vacuum dust to minimize the potential of air-borne exposure.

Avoid eye contact and wear eye protection if/when eye contact is likely to occur.

Avoid skin contact and wear protective clothing and gloves.

Answer 2

Answer:

1) sand remains in the filter paper because the sand I big to move through the filter paper.

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