9 Science- Atoms and pH

What does this symbol mean?

• A substance is acidic

• A substance is basic

• A substance is alkaline

• The contained substance is corrosive

Answer explanation

A corrosive substance can be acidic, basic or alkaline.

Are corrosive substances dangerous and always need cautionary handling?

• No

• Yes

Answer explanation

A corrosive symbol should always indicate caution as you may not know what the substance is

What should you do immediately if any corrosive substance is spilt on your skin, clothes or in eyes?

• Call an ambulance

• Place effected area under running water

• Tell somebody

• Scream at the top of your voice

Answer explanation

Always place area immediately under running water. Then tell somebody so that the appropriate help can be administered

Corrosive substances are only dangerous if they are spilt on you?

• True

• False

Answer explanation

Corrosive substances can often affect your respiratory system. Coughing, sore throat, shortness of breath are all indicators of corrosive substance exposure. Sore, dry/burning eyes or watering eyes are also symptoms of corrosive substance exposure.

Corrosive substances should be used in well ventilated areas?

• True

• False

Answer explanation

If you start to feel affected by gasses emitted from corrosive substances you should open a window. If needed, place corrosive substance in a safe place, secure lids etc, turn off any bunsen burner and step outside for some fresh air.

Should safety glasses be worn at all times when using corrosive substances?

• Of course! What a silly question

• Not all the time. Thats just overkill.

Metals react with acids to produce?

Answer explanation

Undergoes a displacement reaction

What test can you use to test for hydrogen gas?

How do you know Hydrogen gas is produced?

• The flame goes out

• The flame ignites

• The gas goes "pop"

• Flames spurt out of the test tube

What gas is produced when an acid reacts with a metal carbonate?

• Carbon Dioxide

• Hydrogen

• Oxygen

• Nitrogen