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Topic 28Science

Chemistry — Materials and Their Structure

Chemistry — Materials and Their Structure — Cambridge Lower Secondary Science 0893, Stage 9. Periodic Table and atomic structure; Covalent and ionic bonding.

Practice questions
1

Periodic Table and atomic structureSign up

Understand that the structure of the Periodic Table is related to the atomic structure of the elements and the Periodic Table can be used to predict an element's structure and properties.

30 min
2

Covalent and ionic bondingSign up

Understand that a molecule is formed when two or more atoms join together chemically, through a covalent bond. · Describe a covalent bond as a bond made when a pair of electrons is shared by two atoms (limited to single bonds). · Describe an ion as an atom which has gained at least one electron to be negatively charged or lost at least one electron to be positively charged. · Describe an ionic bond as an attraction between a positively charged ion and a negatively charged ion.

30 min

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