Thomson was studying the properties of cathode rays, and found that they were over 1,000 times lighter than the hydrogen (H) atom and that they were the same mass irrespective of the parent atom. He called these particles “corpuscules”, but scientists later dubbed them “electrons”.
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Make the abstract nature of atomic theory more concrete with these evidence-informed teaching tips
Use these worksheets to develop learners’ understanding of ionic structures and bonding, including symbols and diagrams and how macroscopic properties are related to bonding
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Identify learning gaps and misconceptions with this set of worksheets offering three levels of support
Identify learning gaps and misconceptions with this set of worksheets offering three levels of support
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