All Grades > Grade 9 > Integrated Science > Term 1 Questions

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Question 1

What is the nucleus of an atom and which tiny (sub-atomic) particles are found inside it?

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Question 2

What is an electron and what is its electric charge?

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Question 3

Explain the importance and role of electrons

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Question 4

A chlorine atom has 17 protons and 18 neutrons. How do you calculate its mass number?

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Question 5

Explain what the mass number represents

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Question 6

Why can two atoms of the same element have different mass numbers?

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Question 7

Provide a definition for isotopes?

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Question 8

How are isotopes similar and different?

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