chemistry quiz 1

which one of the following is not a laboratory safety?

• drink water when thirsty

• clean all spillages

• report any accident

• wear safety clothing

which one of the following is safe to do in the lab

• play with friends

• add water to acid

• add acid to water

• mix any chemical you find

what safety measure should be considered when cleaning sodium hydroxide spillage?

• use your bare hands

• wear gloves and goggles

• clean with a peace of cloth

• leave it to dry

what is the first thing to do when tere is an accident in the laboratory

• run for your life

• stay where you are

• scream

• notify the teacher

why shouldnt you add water to acid in the laboratory

• the reaction cant happen

• the reaction is endothermic so can cause an explosion

• the reaction is exothermic so can cause an explosion

• the reaction is too slow

what should you do when your body is in contact with sodium hydroxide?

• nothing

• you scream

• wash with a lot of running water

• wash with water in a dish

a person who inhales smoke in the laboratory can be helped by?

• mouth to mouth

• making him sleep and relax

• making him stand

• taking him out side where there is enough air

which one of the following is a laboratory safety rule

• do dance in the laboratory

• do experiments you have no knowledge about

• do not eat in the laboratory

• its ok to enter the lab without the teacher knowing

why should sodium hydroxide be added to acid spillage before cleaning?

• to make the acid stop moving

• to neutralise the acid

• so that you can easily mop

• to make it visible

why should you not eat in the laboratory?

• food can get contaminated and cause poisoining

• digestion stops when in the lab

• the teacher does not like it

• its bad manners