7. Write word equations for reactions.
5
Identify reactants and products in a reaction.
o
Checkpoint: 6 mark question - 10 minutes
Compare chemical reactions with physical changes. Include
examples to illustrate your answer. (6 marks, QWC)
.
Ensure you cover the following:
Describe what happens to atoms in chemical reactions
Give similarities and differences between chemical reactions and physical changes.
Give examples of chemical reactions and physical changes.

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.