CAIE IGCSE Chemistry 2.2.1 Structure of the Atom As a Central Questions

Describe an atom using a central nucleus containing protons and neutrons, with electrons in surrounding shells, then check particle locations in statements.

Exam points

Name protons and neutrons as the two particle types in the nucleus of the specified atom.
Check statements about an atom by distinguishing protons in the nucleus from electrons outside it.

[Maximum number: 1]

Four statements about atoms are listed.

1 The centre of an atom is positively charged.
2 Protons and electrons are located in the nucleus.
3 Protons and electrons have the same mass.
4 Most of the mass of an atom is in the nucleus.

Which statements are correct?

1 and 2

1 and 4

2 and 3

3 and 4

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CAIE IGCSE Chemistry 2.2.1 Structure of the Atom As a Central Questions question 1