Why do the elements in Group 7 form ions with a single negative charge?
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Card 7
Front
Which of the following substances are made of molecules? KCl, H2O, C2H6, MgO, CO2, NaNO3
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Card 8
Front
Why can the structure of a metallic element like copper be represented by lots of small spheres the same size packed together?
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Card 9
Front
Write the correct formula for each of the following: lithium chloride, sodium oxide, calcium flouride, magnesium hydroxide, sodium sulfate, calcium nitrate.
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Card 10
Front
Why do ionic compounds have giant structures?
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Card 11
Front
Draw a dot and cross diagram to show the bonding in methane, CH4. (Draw on sheet of paper)
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Card 12
Front
Draw diagrams using symbols and lines to show the covalent bonds in F2, O2, HBr, H2O, NH3 (Draw on sheet of paper)
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Card 13
Front
Draw dot and cross diagrams to show what happens when a potassium atom reacts with flourine atom (Draw on sheet of paper)
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Card 14
Front
Explain why silicon (in Group 4) has a giant structure
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Card 15
Front
Explain how the atoms in a piece of sodium metal are held togethera
