Structure & Properties of Ionic Compounds and Metals

What does it mean for a substance to have a crystal structure?

• The particles are arranged in an orderly, repeating pattern

• The particles are arranged randomly

• The particles can conduct electricity

• The substance must be an ionic compound

Which type of substances always have crystal structures?

• only ionic compounds

• only metals

• both ionic compounds and metals

• no type of substance always have crystal structures

Which of the following is true about bonding in metals?

• There is no bonding in metals because they are not compounds

• Metal atoms are bonding by the valence electrons' ability to wander freely through the entire piece of metal

• Metal atoms are bonded by the valence electrons' ability to be taken by other more electronegative atoms

• Metal atoms are bonded by their crystal structure

Which property is responsible for the function of batteries and our bodies ability to move charge around our cells?

• Metals are able to conduct heat

• Ionic compounds are not able to conduct electricity when solid

• Ionic compounds are able to conduct electricity when dissolved in water

• Ionic compounds are able to conduct electricity when melted

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Which of the following correctly describes why ionic compounds are brittle?

• Ionic compounds have a crystal structure

• Ionic compounds have valence electrons that wander freely through the entire substance

• Ionic compound particles are locked into place by attractions & repulsions between ions

• All of these are true

Which of the following are properties of metals?

• maleable

• conducts heat well

• high melting points

• ductile

Which of the following are properties of ionic compounds?

• conducts electricity in the solid form

• conducts electricity when dissolve in water or melted

• brittle

• high melting points

Which of the following describes an alloy?

• a homogeneous mixture of only metals

• a homogeneous mixtures of ionic compounds

• a homogeneous mixture of elements

• a homogeneous mixture of elements, but one has to be a metal

Which of the following correctly describes why alloys are useful?

• It is difficult to have a pure substance, so might as well mix them all together

• Alloys blend the properties of the elements they are made up from

• All alloys are stronger than any pure element

• All of these are correct

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