Materials

Multiple Choice Quiz

Try this as often as you like.
You will get a different set of questions each time you attempt this quiz.

Which three of the following statements about crystals are correct?
1. They are generally solids with a regular shape
2. They have smooth sides
3. They have a regular three-dimensional pattern
4. They have low melting points
The father and son team of William Henry Bragg and Lawrence Bragg won the Nobel Prize in Physics in 1915 for
1. Using X-ray scattering to determine the internal structure of particles in crystals
2. discovering penicillin
3. working out the structure of haemoglobin
4. determining the crystal structure of vitamin B-12
Select the three ionic crystals from this list:
1. NaCl
2. MgO
3. KI
4. CO₂
5. SiO₂
Which three of the following may be classified as a molecular crystal?
1. CO₂
2. S₈
3. I₂
4. Cu
5. KCl
Which one of the following statements best describes a covalent macromolecular crystal?
1. Very hard substance with high melting point, does not conduct electricity and is insoluble in polar and non-polar solvents.
2. Good conductor of electricity, and insoluble in polar and non-polar solvents.
3. Soft with a low melting point, does not conduct electricity.
4. Hard and brittle substance with a high melting point, conducts electricity when molten or dissolved in solution, soluble in polar solvents.
Born in 1910, this scientist is credited with using X-ray crystallography to determine the structures of cholesterol, penicillin and vitamin B-12.
1. Dorothy Hodgkin
2. Marie Curie
3. Linda Buck
4. Irène Joliot-Curie
When water freezes, it forms a molecular crystal.
The binding force between the molecules in this crystal are hydrogen bonds.
Select whether this statement is TRUE or FALSE.
1. TRUE
2. FALSE
Which one of the following four structures is that for buckminsterfullerine?
Which one of the following is not a property of an ionic crystal?
1. They do not conduct electricity
2. They have high melting points
3. They are soluble in polar solvents
4. They conduct when molten or in solution
A molecule made up of a large number of repeating units is called a
1. polymer
2. monomer
3. primer
4. dimer
Polythene is made from the monomer called
1. ethene
2. styrene
3. propene
4. tetrafluoroethane
Karl Zeigler's research into organometallic compounds made possible the industrial production of which polymer?
1. polythene
2. PVC
3. polythene
4. polypropene
There are three known covalent macromolecular crystals, each made entirely of carbon atoms.
Which of the following statements is incorrect?
1. The forces between the atoms in diamond are weak Van der Waal forces.
2. The forces in graphite consist of covalent bonds and Van der Waal forces.
3. Graphite is used in golf clubs and in pencils.
4. Diamond is the hardest known natural substance.
5. The three types of crystal are diamond, buckminsterfullerine and graphite.
Select the three correct statements from the following:
1. Iodine ls made up of covalent macromolecular crystals with weak Van der Waals forces between the molecules.
2. Metals are good conductors because the outer valence electrons can move easily between the atoms.
3. Most Ionic crystals dissolve in water because water can break the bond between the Ions in the crystal.
4. Dorothy Hodgkin developed X-ray crystallography to ﬁnd the structure of crystals.
5. The father and son team of the Braggs ﬁrst discovered the structure of penicillin and vitamin B-12.
The process whereby small molecules called monomers combine to form much larger molecules is known as addition polymerisation.
Polytetraﬂuoroethane (PTFE) is one such polymer formed by this process.
Which one of the following statements is not correct?
1. PTFE goes by the brand name Teﬂon and is used as a substitute for wool.
2. Plumbers tape, non-stick frying pans and some medical body parts are made using PTFE.
3. The equation for how polytetraﬂuoroethane is produced from its monomers is
4. In 1938, Roy Plunkett, working for DuPont accidentally discovered polytetraﬂuoroethane.
Which one of the following is not a property of metals?
1. Brittle
2. Good conductors of electricity
3. Ductile (can be stretched into a wire)
4. Generally hard
5. Good conductors of heat
6. Malleable (easily hammered into a shape)