formulae, equations and hazards Flashcards
What does (s) represent in a symbol equation?
The substance is solid
What does (l) represent in a symbol equation?
The substance is a liquid
What does (g) represent in a symbol equation?
The substance is a gas
What does (aq) represent in a symbol equation?
The substance is aqueous
What does aqueous mean?
The substance is dissolved in water
What does it mean if a substance is corrosive?
It can cause blistering/damage/burns to skin
What safety precautions should you take when working with corrosive chemicals? Why?
Goggles to protect eyes
Gloves to protect hands
Covering exposed skin to protect skin
What does it mean if a substance is flammable?
It catches on fire easily
What safety precautions should you take when working with flammable chemicals?
Keep away from naked flames
What does it mean if a substance is toxic?
It can poison humans if eaten or breathed in
What safety precautions should you take when working with toxic chemicals?
Wear face mask or use a fume cupboard to stop you breathing it in
wear disposable gloves or wash hands after using to prevent eating it
What is the formula for carbon dioxide?
CO2
What is the formula for nitrogen gas?
N2
What is the formula for hydrochloric acid?
HCl
What is the formula for sulphuric acid?
H2SO4
