Chemical Reactions Flashcards
(5 cards)
1
Q
Chemical Reaction
A
The conversion of one substance to another through rearrangement of their atoms
2
Q
Chemical equation
A
A way of representing a chemical reaction
Reactants on the left
Products on the right
3
Q
Four states
A
Solid - s
Liquid - l
Gas - g
Aqueous - aq, dissolves in water, gone into solution
4
Q
Chemical formula to memorise
A
Water = H2O (l)
Carbon Dioxide = CO2 (g)
Oxygen gas = O2 (g)
Hydrogen gas = H2 (g)
Hydrochloric acid = HCI (aq)
Sulfuric acid = H2SO4 (aq)
Nitric acid = HNO3 (aq)
Sodium hydroxide = NaOH (aq)
Acids are all aqueous
5
Q
Conservation of Mass
A
During a chemical reaction, atoms cannot be created nor destroyed
