Science

- Method : stick p + n beads to blue tac 

- Cut out rings from paper 

- Draw electrons onto rings 

- Create a label 

- Tape strings to back of paper so it can hang. 

- Pick an atom form 3-10 on periodic table/
- Find out how many protons,neutrons + Electrons it has.
- Equipment: I piece of card.
                    30 cm strings
                     blue tac
                     coloured beads for protons + neutrons.

- Discussion - Together, the number of protons and the number of neutrons determine an elements mass number mass number = protons + neutrons. Lead atoms bond together and they make up the lead that we use as a pencil. Oxygen, O. Oxygen is in Group 6. It has six electrons in its outer shell. It gains two electrons from one or two other atoms in reactions, forming an oxide ion, O ^2-.

 

                 

- Conclusion - 

The atomic number is 6 and the mass number is 12 .

The Number of protons is 6, number of electrons is 6 and 6 Neutrons.

The first shell have 2 electrons and the second shell have 4 electrons we can lost the sound shell and will have 4+.