![]() ![]() how to balance chemical reaction equations.how to write chemical reaction equations and.In this chapter we are going to build on these ideas. This requires that bonds are broken in the reactants and new bonds are formed in the products. During a chemical reaction, atoms are rearranged.The materials we start with are called reactants, and the new materials that form are called products. During chemical reactions, materials are changed into new materials with new chemical and physical properties.Can you remember the main ideas about chemical reactions? Here they are again: 8 Matter and Materials we learnt about chemical reactions for the first time. How do we translate between word equations, picture equations and chemical equations?.How can we tell if a reaction is balanced?.What does it mean to balance a chemical equation?.What do the numbers in a chemical reaction mean?.What do the different symbols in a chemical reaction equation mean?.How can we represent what happens in a chemical reaction?.Interpreting, writing formulae, balancing equations, comparing, drawing Interpreting, writing formulae, balancing equations, comparing Interpreting, writing formulae, balancing equations Identifying, sorting and classifying, interpreting By starting with word equations and progressing to submicroscopic representations (picture equations) before translating the latter to the symbolic format (chemical equations), we hope to build/scaffold the learning of chemical equations as well as develop learners' ability to imagine events on the submicroscopic scale.Ģ.1 Thinking about chemical equations (0.5 hours)Ģ.2 How do we represent chemical equations? (1 hour)Īctivity: Identifying the different types of equations Ultimately, they have to be able to write chemical equations, but this is a very complex skill. We have tried to introduce learners to the idea that chemical reactions can be thought of in different ways. ![]() 8 and this skill will be further reinforced in this chapter. ![]() Learners were introduced to particle diagrams in Gr. The atoms do not change only their arrangement in relation to each other changes. 8 Matter and Materials.īy this stage, learners should know that atoms are rearranged during a chemical reaction. ![]() This chapter builds on the introduction to chemical equations given in Chapter 1 and 3 of Gr. ![]()
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