Welcome to the quiz!
First question: Which is the smallest?

  Molecule
  Blood cell
  Atom
  Bacteria

How many elements are there?

  About 10
  About 100
  About 1,000
  About 10,000

What are the three states of matter?

  Solid, Water, Gas
  Cold, Hot, Freezing
  Hard, Soft, Gas
  Solid, Liquid, Gas

How many different types of atom does an element have?

  1
  2
  3
  4
  more

What is the symbol for carbon dioxide?

  c2
  co2
  2oc
  c2o

What electrical charge does a proton have?

  positive
  negative
  neutral
  none of those

Potassium + h20 = ?

  Sodium chloride
  Potassium sulphate
  Potassium oxide
  Potassium hydroxide
  Pottasium nitrate

What is the atomic number for helium?

  1
  2
  3
  4
  5
  6
  7
  8
  9

What is the scientific name for rust?

  Iron nitrate
  Copper sulfate
  Iron oxide
  Copper chloride