Oquizy

Which of the following correctly describes the structure of poly(ethene)?

Ionic lattice of repeating ions Lattice of positive ions in a sea of electrons Long chains of covalently bonded atoms Simple molecules held by weak forces

Which of the following contains metallic bonding?

Carbon dioxide Sodium Sodium chloride Water

Why does graphite conduct electricity but diamond does not?

Diamond has a sea of electrons Diamond has more bonds Graphite has delocalised electrons Graphite has ions

Which statement best explains why alloys are harder than pure metals?

Alloys contain more protons than metals Alloys have more electrons The atoms are arranged in a perfect pattern The atoms are of different sizes, making it harder for layers to slide

A student observes that silicon dioxide (SiO₂) has a very high melting point and does not conduct electricity. What can be deduced about its bonding and structure?

It contains metal ions It has giant ionic structure It is a giant covalent structure It is a simple molecular compound

John says graphite is a good lubricant and a good conductor. Which statement explains this?

It contains ionic bonds It has free electrons and layers that can slide It has weak bonds between carbon atoms Its atoms form neutral molecules

Quiz: Chemistry - Chemical Bonding