1. Label the diagram of the atom:
- Proton
- Neutron
- Electron
2. The table of the elements below shows how elements may be grouped together. The first one is done for you.
- Element: Hydrogen (H) → 1 hydrogen, 0 oxygen
- Element: Oxygen (O) → 0 hydrogen, 1 oxygen
- Element: Carbon (C) → 0 hydrogen, 0 oxygen
- Element: Nitrogen (N) → 0 hydrogen, 0 oxygen
- Element: Sulfur (S) → 0 hydrogen, 0 oxygen
- Element: Water (H₂O) → 2 hydrogen, 1 oxygen
- Element: Carbon Dioxide (CO₂) → 0 hydrogen, 2 oxygen
- Element: Ammonia (NH₃) → 3 hydrogen, 0 oxygen
- Element: Methane (CH₄) → 4 hydrogen, 0 oxygen
3. Diagrams to represent molecules:
- H₂O: Two red circles (hydrogen) attached to one blue circle (oxygen)
- CO₂: One gray circle (carbon) with two red circles (oxygen) on either side
- NH₃: One gray circle (nitrogen) with three red circles (hydrogen) attached
- CH₄: One gray circle (carbon) with four red circles (hydrogen) attached
4. Key:
- Red circle: Hydrogen
- Blue circle: Oxygen
- Gray circle: Carbon
- Green circle: Nitrogen
Parent Tip: Review the logic above to help your child master the concept of atoms and elements worksheet.
