This quiz contains a mix of SL and HL questions

1. A water molecule is formed of ...

  • A. ionic bonds between a hydrogen and an oxygen atom
  • B. covalent bonds between a hydrogen and an oxygen atom
  • C. ionic bonds between two hydrogen atoms and one oxygen atom
  • D. covalent bonds between two hydrogen atoms and one oxygen atom

2. The nucleus of the oxygen atom is more attractive to electrons than the nucleus of the hydrogen atom. There is unequal sharing of electrons. This causes which of the following?

  Hydrogen Oxygen
A. Partial negative charge Partial positive charge
B. Partial positive charge Partial negative charge
C. Partial negative charge Partial negative charge
D. Partial positive charge Partial positive charge

3. Substances which dissolve in water are known as ...

  • A. hydrophobic
  • B. insoluble
  • C. hydrophilic
  • D. hydrolysing

4. Which of the following is a hydrophobic molecule?

  • A. Trigylceride
  • B. Glucose
  • C. Ribose
  • D. DNA

5. Capillary action in plant cell walls and the movement of water through soil is explained by which property?

  • A. Cohesion
  • B. Boyancy
  • C. Adhesion
  • D. Thermal conductivity

6. Cohesion depends on:

  • A. The hydrogen bonding between hydrogen and oxygen in the same water molecule
  • B. Hydrogen bonding between two hydrogen atoms
  • C. The hydrogen bonding between hydrogen and oxygen in a different water molecule
  • D. The polar forces between water and the surface.

7. The black-throated loon (Gavia arctica) spends much of its time flying but can also swim underwater and dive to catch fish. Solid bones, compression of air in its feathers and in the lungs are necessary because..

I. Water produces more buoyancy than air
II. Water is less viscous than air
III. Water is a better thermal conductor than air
 
  • A. I only
  • B. I and II only
  • C. II and III only
  • D. I, II and III

8. The high specific heat capacity of water enables large expanses of water, e.g. a lake habitat to ..

  • A. lose heat quickly
  • B. heat up quickly
  • C. change temperature rapidly
  • D. maintain a relatively stable temperature

9. What is the significance of the Goldilocks zone in relation to the origin of water on Earth?

  • A. It refers to the habitable zone around a star where conditions are just right for liquid water to exist.
  • B. It is the region in the solar system where comets and asteroids containing water are most likely to be found.
  • C. It is the area on Earth where the first life forms originated and evolved.
  • D. It is the zone in the atmosphere where water vapor condenses to form clouds and precipitation.

10. Which of the following applies to the origin of water on Earth?

I. It may be extraplanetary
II. Has been retained because of the presence of gravity
III. Temperatures on Earth are high enough to condense water vapour
IV. Its abundance has allowed the evolution of life
  • A. I and III only
  • B. II and III only
  • C. I, II, and IV only
  • D. I, II, III, and IV