Learning Goals
- Name the three subatomic particles and describe their charge.
- Identify where protons, neutrons and electrons are located in an atom.
- Explain why an atom is overall electrically neutral.
Warm Up
Label the diagram
Use the lesson to fill in all columns. Write the name, charge and location for each labelled part of the atom.
| Label |
Particle / Part name |
Charge |
Location in atom |
| A |
|
|
|
| B |
|
|
|
| C |
|
|
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| D |
|
|
|
Labels: A = Proton | B = Neutron | C = Electron | D = Nucleus
Your Turn
True or False? Fix the false ones
Circle T or F for each statement. If the statement is false, rewrite it correctly on the line below.
Protons are found outside the nucleus, orbiting in shells.
Correct it:
Neutrons have a negative charge of −1.
Correct it:
An atom with 6 protons also has 6 electrons, making it overall neutral.
Correct it:
The nucleus contains most of the atom's mass, even though it is very small.
Correct it:
A neutron is the same thing as a neutral atom, both have no charge.
Correct it:
Show What You Know
1. An atom has 8 protons. How many electrons does it have? Explain how you know.
Recall
2 marks
2. Name the two particles found inside the nucleus. For each one, state its charge.
Recall
2 marks
Wrap Up
In one sentence, what was the main idea of this lesson?