Question

What precautions should be maintained to write chemical reaction? write four points for class 7
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Answer 1

Answer:

flammable or explosive. flammable or explosive chemicals are must be kept away from heat or ignition sources, such as light bulbs and sparks.. corrosive chemicals must be kept from contacting with the eyes , face. , skin or windpipe

Answer 2

Answer:

hey mate!!!

• we shan't confuse the '→' sign with the '=' sign.
• '→' means 'becomes' and '=' means 'equals to'.
• the correct formulas of a substance should be written
• for example,

NaOH + HCl → NaCl+ h₂o

all the best :)