Question

snc1w1 - grade 9 science 0.1.2 whmis and hhps - practice homework 1) match the letter and symbols below with correct definitions. there is only one best answer for each definition.
i. this material could kill you if it is swallowed, inhaled, or absorbed through the skin.
ii. chemicals in this division wont kill you immediately, but could cause such unwelcome effects as birth defects in your children or liver damage.
iii. the fact that most aerosol cans have propellants that can be ignited easily means that this symbol should be on their labels.
iv. industrial cleaners containing sodium hydroxide, a very corrosive base, should have this symbol on their label.
v. heating or dropping could cause these cylinders of pressurized gases to explode.
vi. some chemicals bearing this symbol could undergo a dangerous reaction if they come in contact with water.
vii. blood samples that have been contaminated by hepatitis b viruses should be tagged with this symbol.
viii. since it poses such a fire hazard, a bottle of methanol would have this symbol on its label.
ix. a chemical that causes cancer after prolonged and repeated exposure would get this symbol on its label.
x. by releasing oxygen, can cause a flammable material to burn more easily.

Explanation:

• i. A material that can kill if swallowed, inhaled or absorbed is highly toxic, which corresponds to the skull - and - crossbones symbol D1.
• ii. Chemicals causing long - term health effects like birth defects or liver damage are hazardous to health, symbol D2.
• iii. Aerosol cans with flammable propellants have a flammable symbol, B.
• iv. Corrosive substances like sodium hydroxide have a corrosive symbol, A.
• v. Pressurized gas cylinders that can explode have a symbol indicating compressed gas, not shown in the given symbols but if we assume from common WHMIS, it's not among these.
• vi. Chemicals that react dangerously with water have a symbol for dangerous when wet, E.
• vii. Contaminated blood samples with Hepatitis B have a bio - hazard symbol, D3.
• viii. Methanol, a flammable liquid, has a flammable symbol, B.
• ix. Chemicals causing cancer after long - term exposure are carcinogenic, symbol F.
• x. Substances that release oxygen to aid combustion are oxidizing agents, symbol C.

Answer:

i. D1
ii. D2
iii. B
iv. A
v. (No match in given symbols)
vi. E
vii. D3
viii. B
ix. F
x. C