Chemical Symbols and Chemical Reactions

Hydrogen

Carbon

Oxygen

Sodium

Magnesium

Sulphur

Chlorine

Potassium

Calcium

Copper

You will have to learn these, and other, chemical symbols for the terminal GCSE exam. For the other chemical symbols have a look at the periodic table (you don't have to learn all of them).

 

Now answer these questions

  1. What is the chemical symbol for magnesium ?
  2. What is the chemical symbol for copper ?
  3. What is the chemical symbol for hydrogen ?
  4. What is the chemical symbol for calcium ?
  5. What is the chemical symbol for sodium ?
  6. What is the chemical symbol for oxygen ?
  7. What is the chemical symbol for chlorine ?
  8. What is the chemical symbol for potassium ?

You scored out of 8 on that test


methane

Last lesson we saw how four hydrogen atoms can join to one carbon atom to form methane.

So methane is a molecule with one carbon atom and four hydrogen atoms - the chemical symbol for this molecule is: CH4.

The molecule sodium chloride is joined by ionic bonds: it contains one sodium atom and one chlorine atom - its chemical formula is NaCl.

sodium chloride

 

Now answer these questions:

  1. What is the chemical formula for sodium chloride ?
  2. What is the chemical formula for potassium chloride ?
  3. What is H2O ?
  4. What is the chemical formula for sodium hydroxide ?
  5. What is the chemical formula for potassium fluoride ?
  6. Wha gas is H2 ?
  7. What is the chemical symbol for potassium bromide ?
  8. What is O2 ?
  9. What is CH4 ?
  10. What is C2H5OH ?

You scored out of 10 on that test