Formulae, Equations and Hazards (1+2)
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What is the chemical formula of the polyatomic ion ammonium?
NH4+
What is the chemical formula of the polyatomic ion hydroxide?
OH-
What is the chemical formula of the polyatomic ion nitrate?
NO3-
What is the chemical formula of the polyatomic ion carbonate?
CO32-
What is the chemical formula of the polyatomic ion sulfate?
SO42-
Define hazard.
anything that has the potential to cause harm or damage
Define risk.
the probability of someone (or something) being harmed if they are exposed to the hazard
What is the hazard symbol for oxidising? and what does this mean?
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
What is the hazard symbol for highly flammable? and what does this mean?
an line which is on fire (in a red outlined diamond) this means that the substance catches fire easily
What is the hazard symbol for environmental hazard? and what does this mean?
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
What is the hazard symbol for corrosive? and what does this mean?
two test tubes dripping a liquid outwards, one onto a rectangle and one onto a hand (in a red outlined diamond) this means that the substance destroys materials, including living tissues
What is the hazard symbol for toxic? and what does this mean?
a skull and crossbones (in a red outlined diamond) this means that the substance can cause death
What is the hazard symbol for harmful? and what does this mean?
an exclamation mark (in a red outlined diamond) this means that the substance can cause irritation, reddening or blistering of the skin
What should you do with oxidising substances?
keep them away from flammable substances, clothing and skin
What should you do with highly flammable substances?
keep them away from open flames, don’t let them come into contact with your skin or clothing
What should you do with environmental hazard substances?
dispose of them properly and never release them into the environment (e.g. don’t tip it down a sink)
What should you do with corrosive substances?
never let them come into contact with your eyes, skin or clothing
What should you do with toxic substances?
never let them come into contact with the skin and never breathe them in
What should you do with harmful substances?
keep them away from skin, eyes and clothing