This question is about the structure of atoms.
Complete the sentences.
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The __________________ of an atom contains neutrons and __________________.
The __________________ are arranged in __________________ on the outside of the atom.
Complete Table 1 to show the relative masses of the three particles.
Particle | Relative mass |
Electron | |
Neutron | |
Proton |
Which particle has a negative charge?
Choose the answer from the box.
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Using the Periodic Table, complete the following chemical symbols.
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