Answers to science focus 4 homework book

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Asked by Wiki User. Please state a specific section of the book that you would like to have answers for. Worksheet 1. This is your homework. Wiki won't help you cheat, so get to work. There usually a website for the book, or some of the answers could be in the back.

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Unit 1. The negatively charged electrons surround the nucleus in shells. The number of protons and electrons must be the same for the charge in the atom to balance. Atoms can be broken down into sub-atomic particles protons, neutrons and electrons. The chemical symbol for iron is Fe.
ANSTO: p. Australian Associated Press Pty Ltd: pp. Corbis Australia Pty Ltd: pp. Dorling Kindersley: p. Doug Thost Photography: p.

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