- Law of Conservation of Mass
- State symbols
- Chemical Equations
- Particle types of substances in reactions (atoms, ions, molecules)
- Reaction Types
- Acids, Bases & Indicators
- multiple choice
- equations problem solving like our practice quiz
- For each skeleton equation below:
a) Identify the reaction type: synthesis, decomposition, combustion, single displacement, double displacement, neutralization. Note, if they fit into two categories then include both.
b) Balance the equation.
c) Write the word equation above the skeleton equation.
d) Above the word equation, identify the kind of particles each substance is made of. Choose from: atoms, ions or molecules.NOTE: Don’t worry about naming C12H22O11, it’s a carbohydrate, just call it that. Also, C4H12 should be C4H10. This one is called butane, the fuel in lighters.
- For each of the following:
a) Identify the reaction type.
b) Write the word equation.
c) Write the balanced chemical equation with state symbols.
i) A piece of nickel is placed into a solution of silver nitrate. A chemical reaction occurs and the mixture is filtered. Silver metal remains caught in the filter while the solution of nickel (II) nitrate passes through into the flask below.
ii) A sample of mercury (II) nitrate crystals are heated. Nitrogen dioxide and oxygen gasses are formed and pure liquid mercury is left behind.
iii) Crystals of tetraphosphorous decoxide are dropped into pure water. They react to form a solution of phosphoric acid.
iv) A solution of barium hydroxide is mixed with a solution of iron (III) sulfate. The mixture is filtered. Barium sulfate is insoluble so crystals of it are trapped in the filter while the solution of iron (III) hydroxide passes into the flask below.
v) Methane is burned in oxygen from a Bunsen burner. It’s a perfect combustion resulting in the production of carbon dioxide gas and water vapour.
vi) A solution of aluminum hydroxide is mixed with sulfuric acid. Heat is produced resulting in new water molecules floating around in the solution of aluminum sulfate.
vii) Iron (II) chloride crystals are reacted with chlorine gas which turns them into crystals of iron (III) chloride.