Formulae, Equations and Hazards (1+2)

Question 1

What is the chemical formula of the polyatomic ion

ammonium?

Answer 1

NH4+

Question 2

What is the chemical formula of the polyatomic ion

hydroxide?

Answer 2

OH-

Question 3

What is the chemical formula of the polyatomic ion

nitrate?

Answer 3

NO3-

Question 4

What is the chemical formula of the polyatomic ion

carbonate?

Answer 4

CO32-

Question 5

What is the chemical formula of the polyatomic ion

sulfate?

Answer 5

SO42-

Question 6

Define

hazard.

Answer 6

anything that has the potential to cause harm or damage

Question 7

Define

risk.

Answer 7

the probability of someone (or something) being harmed if they are exposed to the hazard

Question 8

What is the hazard symbol for

oxidising?

and what does this mean?

Answer 8

an ‘O’ which is on fire (in a red outlined diamond)

this means that the substance provides oxygen, which allows other materials to catch fire more easily and burn more fiercely

Question 9

What is the hazard symbol for

highly flammable?

and what does this mean?

Answer 9

an line which is on fire (in a red outlined diamond)

this means that the substance catches fire easily

Question 10

What is the hazard symbol for

environmental hazard?

and what does this mean?

Answer 10

a dead tree and a dead fish on a river (in a red outlined diamond)

this means that the substance is harmful to organisms and the environment

Question 11

What is the hazard symbol for

corrosive?

and what does this mean?

Answer 11

two test tubes dripping a liquid outwards, one s onto a rectangle and one onto a hand (in a red outlined diamond)

this means that the substance destroys materials, including living tissues

Question 12

What is the hazard symbol for

toxic?

and what does this mean?

Answer 12

a skull and crossbones (in a red outlined diamond)

this means that the substance can cause death

Question 13

What is the hazard symbol for

harmful?

and what does this mean?

Answer 13

an exclamation mark (in a red outlined diamond)

this means that the substance can cause irritation, reddening or blistering of the skin

Question 14

What should you do with

oxidising substances?

Answer 14

keep them away from flammable substances, clothing and skin

Question 15

What should you do with

highly flammable substances?

Answer 15

keep them away from open flames, don’t let them come into contact with your skin or clothing

Question 16

What should you do with

environmental hazard substances?

Answer 16

dispose of them properly and never release them into the environment

(e.g. don’t tip it down a sink)

Question 17

What should you do with

corrosive substances?

Answer 17

never let them come into contact with your eyes, skin or clothing

Question 18

What should you do with

toxic substances?

Answer 18

never let them come into contact with the skin and never breathe them in

Question 19

What should you do with

harmful substances?

Answer 19

keep them away from skin, eyes and clothing