Ionic and Covalent compounds
Quiz by Tom
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13 questions
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- Q1What type of bonding forms between ions with opposite charges?Hydrogen bondIonic bondMetallic bondCovalent bond30s
- Q2Why do ionic compounds tend to be brittle at room temperature?They are flexibleThey have low melting pointsTheir ions are arranged in a crystal latticeThey have weak bonds30s
- Q3What kind of compounds form when atoms share electrons?Ionic compoundsCovalent compoundsMetallic compoundsPolar compounds30s
- Q4Why do covalent compounds generally have lower melting points than ionic compounds?Weaker forces of attractionHigher densityStronger forces of attractionLarger molecules30s
- Q5What allows ionic compounds to conduct electricity?When dissolved in water, forming free ionsWhen in solid formWhen exposed to airWhen heated to a high temperature30s
- Q6What type of compounds tend to be brittle at room temperature?Metallic compoundsPolar compoundsIonic compoundsCovalent compounds30s
- Q7What happens to nonmetal atoms in ionic compounds during a chemical reaction?Become negatively charged ionsStay as neutral atomsBecome positively charged ionsForm covalent bonds30s
- Q8What are the valence electrons responsible for in chemical bonding?Creating ionic bondsMaintaining atomic stabilityBonding different atoms togetherDetermining atomic mass30s
- Q9What are the smallest particles that make up a covalent compound called?ElementsParticlesMoleculesIons30s
- Q10What property of ionic compounds allows them to conduct electricity when dissolved in water?BrittlenessHigh melting pointPresence of free ionsLow solubility30s
- Q11Why do ionic compounds have a high melting point?Low densityPresence of covalent bondsStrong bonds between ionsWeak bonds between ions30s
- Q12Why do covalent compounds typically have lower melting points than ionic compounds?Weaker forces of attractionHigher densityStrong covalent bondsPresence of free ions30s
- Q13Why do most covalent compounds not conduct electricity when dissolved in water?Do not form ions in solutionStrong covalent bondsPresence of free electronsHigh solubility30s