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- 1. Multiple ChoiceGiant lattice structure held together by attraction between positive and negatively charged ionssimple covalent moleculesmetallicionicgiant covalent
- 2. Multiple ChoiceElements such as Silicon, diamond and graphite. Compounds include SiO2simple covalent moleculesmetallicionicgiant covalent
- 3. Multiple ChoiceLow melting and boiling points which increase with increasing molecule size due to increased intermolecular forces.simple covalent moleculesmetallicionicgiant covalent
- 4. Multiple ChoiceMelting points are very high – a large amount of energy is needed to break all the covalent bondssimple covalent moleculesmetallicionicgiant covalent
- 5. Multiple ChoiceConductors due to delocalised electronssimple covalent moleculesmetallicionicgiant covalent
- 6. Multiple ChoiceMelting points are generally high – lots of energy is needed to overcome the attractions between positive ions and delocalised electrons.simple covalent moleculesmetallicionicgiant covalent
- 7. Multiple ChoiceFormulae of these might include H2O
each molecule contains 1 O and 2H atomssimple covalent moleculesmetallicionicgiant covalent - 8. Multiple ChoiceCompounds containing a metal and non-metal.simple covalent moleculesmetallicionicgiant covalent
- 9. Multiple ChoiceCovalent compoundsShare electronstransfer electronscontain a sea of electronsconduct electricity
- 10. Multiple Choice
Which of these is covalent?NaClPb(NO3)2CO2AlCl3 - 11. Multiple ChoiceWhich elements tend to lose electrons?metalsnonmetals
- 12. Multiple ChoiceMagnesium bromide is an ionic compound with the chemical formula MgBr₂. What does the "2" tell you?There are 2 bromide ions for every magnesium ionBromide has a 2- chargeBromide has a 2+ chargeThere are 2 magnesium ions to every bromide ion
- 13. Multiple ChoiceWhen an atom loses an electron, it becomes a:positive ionnegative ionneutral ionneutral atom
- 14. Multiple ChoiceIn metals, the _______ electrons form a shared sea of electrons.MetallicInnerOuterIonic
- 15. Multiple ChoiceAtoms form ions in order to becomeisotopesstablemetalsnonmetals
- 16. Multiple Choice
Many alloys are softer than the elements that are in them.
True
False
- 17. Multiple Choice
Why are alloyed metals usually stronger?
They have atoms of different metals in them, which makes it easier for the layer to move past each other...less likely to break
They have atoms of different metals in them, which makes it harder for the layer to move past each other...less likely to break
- 18. Multiple Choice
An alloy is made of __________ size particles while a pure metal is made up of _________ size particles.
same, different
different, same
same, same
different, different
- Answer choicesTagsAnswer choicesTags