Studyit: Subject content

Chemistry 1.5 Demonstrate understanding of aspects of chemical reactions

The actual reactions you will carry out in class will be decided by your teacher but will include all four types: combination, precipitation, displacement and decomposition and all four types will be examined
You will need to be able to classify a reaction as one of these 4 types and to explain how you did this
You will need to know the names and symbols/formulae of the elements you use, especially the common metals plus the non-metals carbon, oxygen, sulfur, nitrogen and chlorine.
You need to be able to predict the formation of a precipitate and identify the spectator ions using solubility rules These are limited to the formation of:

chlorides and iodides of silver and lead
sulfates of calcium, barium and lead
hydroxides of copper, iron(II), iron(III), calcium, barium and magnesium
carbonates of copper, iron(II), calcium, barium, magnesium, zinc, and lead ions.

And also how to use an activity series of metals to predict the products in displacement reactions
You must be able to predict products formed in combination reactions such as those between metals and oxygen, sulfur and chlorine, and between two non-metals such as carbon, sulfur and nitrogen with oxygen
And also how to predict the products formed when carbonate and hydrogen carbonate compounds decompose
You need to learn the products and some possible catalysts for the catalytic decomposition of hydrogen peroxide.
General observations are expected for each of the above types of reactions you need to be able to use these observations to explain how you classify a reaction
You may be required to compare and contrast the 4 types of reactions and to elaborate on the nature of the substances formed from each type
You need to be able to write word and balanced symbol equations for the four types of reactions studied.