Fundamental Particles (CIE A Level Physics)

Topic Questions

3 marks

A student is listing the flavours of quarks they can recall from memory. Their list is below:

Name the flavours of quarks missing from their list.

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4 marks

Complete Table 1.1 below. The right hand column is in units of the elementary charge, e.

Table 1.1

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2 marks

Explain why a proton is not a fundamental particle.

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1 mark

Describe the difference between quarks and antiquarks.

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4 marks

Carbon–10 $({}_{6}^{10}C)$ is an isotope that decays to an isotope of boron (symbol $B$ ) by the emission of a β⁺ particle.

(i)

Complete the nuclear equation for this decay, including the proton and nucleon numbers of all the particles involved.

{}_{6}^{10}C \to

[3]

(ii)

During the decay, a quark in the carbon-10 nucleus changes into a different type.

State the change of quark that occurs.

[1]

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2 marks

State the two leptons in this decay.

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3 marks

State and explain why a hadron with charge –3e cannot exist.

e is the elementary charge.

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1 mark

State the possible quark combination for a hadron of charge +2e.

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