What do all these have in common?
To to Balance the Elements
To write a word
equation (E)



Equation
Product
Reactant
To state the link
between reacting
masses and predict
masses in a reaction.
(E)



Mass
Balanced
Symbol
To calculate the
mass of a reactant or
product in a reaction
given the other
masses in the
reaction (C)

To balance a symbol
equation (A)
Reaction
Naming Compounds
• Metal goes first
• Metal + oxygen = Metal oxide
• Metal + nitrogen = Metal nitrate
• Metal + CO2 = Metal carbonate
• Fluorine, bromine and chlorine  fluoride,
bromide or chloride
Use the rules to name these
compounds
• Name the compound made from sodium and
fluorine.
• What compound is made from oxygen and
zinc?
• What compound is made in the reaction
between bromine and potassium?
Word Equations
• Used to show reactants and products
Reactant + Reactant  Products
• E.g. Magnesium + Oxygen  Magnesium Oxide
• Write the equations for the compounds you
have just named
To to Balance the Elements
To write a word
equation (E)



Equation
Product
Reactant
To state the link
between reacting
masses and predict
masses in a reaction.
(E)



Mass
Balanced
Symbol
To calculate the
mass of a reactant or
product in a reaction
given the other
masses in the
reaction (C)

To balance a symbol
equation (A)
Reaction
Symbol Equations
• Much faster than word equations
• E.g. Mg + O2  MgO
• Write the symbol equations for the word
equations you have just completed
Balancing Equations
• The number of atoms on each side of the
equation must balance
• E.g
Mg +O2  MgO
• There must be the same number of Mg and O
on each side
Balancing Equations
• Are the equations on the worksheet
balanced?
• Finished level 1?
• Try level 2!
Rules
▫ You can’t change the formulae
▫ You can only multiply how many of that
compound/molecule there is
▫ You should have the same number of each
element on each side of the equation
Reacting Masses
• The mass of the reactants will always = the
mass of the products
Now you try
• FeCO3
_________>
FeO
+
CO2
• Step 1: Make sure the equation is balanced
• Step 2: If 3.0g of CO2 is produced from 7.8g
of FeCO3, how much FeO was made?
Objectives Completed

• To state the link between reacting masses
and predict masses in a reaction. (E)
• To calculate the mass of a reactant or
product in a reaction given the other masses
in the reaction (C)
Evaluation
• Complete your pupil progress sheet for this
lesson
• Complete any keywords
• Write a target to help you improve