are linked to other atoms WS 1.2 Extended writing: explain covalent substances, by strong covalent bonds. MS 5b how covalent substances their properties and These bonds must be boil. structure. overcome to melt or boil these substances. Diamond and graphite (forms of carbon) and silicon dioxide (silica) are examples of giant covalent structures. 4.2.2.7 Metals have giant Explain why alloys are 1 Extended writing: Research some uses of Video clips: structures of atoms with harder than pure metals describe melting points metallic substances. strong metallic bonding. in terms of distortion of and boiling points of This means that most the layers of atoms in the metallic substances. Extension: make metals have high melting structure of a pure metal. between the uses of and boiling points. WS 1.2 Extended writing: explain metal substances, their why the melting point and properties and structure. In pure metals, atoms are boiling point of metallic arranged in layers, which substances are high. Research some uses of allows metals to be bent metal alloys. and shaped. Pure metals Extended writing: are too soft for many uses describe the structure of Extension: make and so are mixed with metal alloys. between the uses of other metals to make metal alloys, their alloys which are harder.. properties and structure. 4.2.2.8 Metals are good 0.5 Extended writing: explain conductors of electricity why metallic substances because the delocalised conduct electricity. electrons in the metal carry electrical charge through the metal. Metals are good conductors of thermal energy because energy is
are linked to other atoms by strong covalent bonds. These bonds must be overcome to melt or boil these substances. Diamond and graphite (forms of carbon) and silicon dioxide (silica) are examples of giant covalent structures. WS 1.2 MS 5b Extended writing: explain how covalent substances boil. covalent substances, their properties and structure. 4.2.2.7 Metals have giant structures of atoms with strong metallic bonding. This means that most metals have high melting and boiling points. In pure metals, atoms are arranged in layers, which allows metals to be bent and shaped. Pure metals are too soft for many uses and so are mixed with other metals to make alloys which are harder.. Explain why alloys are harder than pure metals in terms of distortion of the layers of atoms in the structure of a pure metal. WS 1.2 1 Extended writing: describe melting points and boiling points of metallic substances. Extended writing: explain why the melting point and boiling point of metallic substances are high. Extended writing: describe the structure of metal alloys. Research some uses of metallic substances. Extension: make between the uses of metal substances, their properties and structure. Research some uses of metal alloys. Extension: make between the uses of metal alloys, their properties and structure. Video clips: 4.2.2.8 Metals are good conductors of electricity because the delocalised electrons in the metal carry electrical charge through the metal. Metals are good conductors of thermal energy because energy is 0.5 Extended writing: explain why metallic substances conduct electricity.
AQA-8462-SOW-BOND.DOCX