20 Questions Chemistry Quiz


Can you pass a chemistry quiz? Chemistry is the study of matter, energy, and relationships between them. It is one of the fundamental natural sciences, used to explain how things work and to describe and predict properties of matter.

Do you think you understand basic general chemistry? Try this 20 question multiple choice quiz to see if you grasp the basic concepts.

(1) Which piece of glassware would you be most likely to use to measure 500 milliliters of a liquid?

  •  a test tube
  •  a beaker
  •  a graduated cylinder
  •  a pipette

(2) Which of the following molecules is polar?

  •  CO2
  •  H2O
  •  CCl4
  •  N2

(3) All of the following are diatomic molecules, except:

  •  O2
  •  CO
  •  NaCl
  •  H2O

(4) Order the following forms of matter from smallest to largest.

  •  neutron, atom, electron
  •  electron, atom, molecule
  •  polymer, proton, atom
  •  atom, compound, neutron

(5) If you fill a glass to the brim with ice water and let the ice melt, the water will overflow the glass.

  •  True
  •  False

(6) Proteins are made from:

  •  amino acids
  •  nucleic acids
  •  simple sugars
  •  fatty acids

(7) Which of the following statement is true of ice?

  •  Ice is less dense than water.
  •  Ice is the same density as liquid water.
  •  Ice is more dense than water.

(8) All of the following are trends in the periodic table, except:

  •  ionization energy
  •  oxidation state
  •  atomic radius
  •  electronegativity

(9) Sodium is most likely to form a compound with which one of these elements?

  •  krypton
  •  iron
  •  bromine
  •  lithium

(10) One common lab chemical is sometimes called the universal solvent. What is this chemical?

  •  ether
  •  acetone
  •  water
  •  hydrochloric acid

(11) Which of the following is an example of a colloid?

  •  milk
  •  gravel in water
  •  salt in water
  •  sugar in water

(12) Which of the following elements is a liquid at room temperature?

  •  bromine
  •  argon
  •  lithium
  •  antimony

(13) A mole is the number of atoms in:

  •  12 grams of carbon-14
  •  12 grams of carbon-12
  •  1 milliliter of water
  •  1 gram of hydrogen

(14) The pH of pure water is approximately:

  •  2
  •  10
  •  4
  •  7

(15) The invention of the modern periodic table is usually credited to:

(16) One of the products of photosynthesis in plants is:

  •  glucose
  •  water
  •  fructose
  •  chlorophyll

(17) The symbol K stands for which chemical element?

  •  Chromium
  •  Potassium
  •  Sodium
  •  Krypton

(18) Which of these compounds is a good example of an acid?

  •  NaCl
  •  NaOH
  •  HCl
  •  H2O

(19) A liquid has:

  •  a defined volume, but no defined shape
  •  neither a definite shape nor volume
  •  a defined shape and volume
  •  a defined shape, but not a defined volume

(20) If you mix and acid and a base, you get:

  •  an explosion
  •  nothing happens
  •  a salt and water
  •  a different acid and base

Chemistry Quiz Answer Key

  1. a beaker
  2. H2O
  3. H2O
  4. electron, atom, molecule
  5. False
  6. amino acids
  7. Ice is less dense than water.
  8. oxidation state
  9. bromine
  10. water
  11. milk
  12. bromine
  13. 12 grams of carbon-12
  14. 7
  15. Mendeleev
  16. glucose
  17. Potassium
  18. HCl
  19. a defined volume, but no defined shape
  20. a salt and water

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