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Lesson Worksheet: Quarks Chemistry

In this worksheet, we will practice describing the properties of quarks and the composition of protons and neutrons.

Q1:

A composite particle is composed of 2 up quarks and 1 down quark. What is the overall electric charge of this particle?

Q2:

Which of the following denotes the two values of electrical charge a quark can have?

  • A+13e and 23e
  • B0 and 12e
  • C+1e and 1e
  • D13e and +23e
  • E+12e and 12e

Q3:

What electrical charge does an up quark possess?

  • A12
  • B+12
  • C+23
  • D1
  • E13

Q4:

Which of the following is not a type of quark?

  • ABottom
  • BStrange
  • CLeft
  • DUp
  • EDown

Q5:

Which of the following is composed of 3 quarks in the form uud?

  • AA proton
  • BAn electron
  • CBeta particles
  • DAlpha particles
  • EA neutron

Q6:

Which of the following represents the neutron composition of the quarks inside the nucleus of a helium atom with atomic symbol 42He?

  • A2 neutrons, each composed of 1 down (d) quark and 2 up (u) quarks
  • B4 neutrons, each composed of 1 up (u) quark and 2 down (d) quarks
  • C6 neutrons, each composed of 1 up (u) quark and 2 down (d) quarks
  • D2 neutrons, each composed of 1 up (u) quark and 2 down (d) quarks
  • E2 neutrons, each composed of 3 down (d) quarks

Q7:

Calculate the total number of down quarks in the nucleus of an element that has atomic number 9 knowing that its nucleus contains 28 up quarks.

Q8:

What is the electrical charge of bottom quarks?

  • A23 e
  • B+23 e
  • C+13 e
  • D13 e
  • E1 e

Q9:

The composition of the neutron from quarks is .

  • Audd
  • Buuu
  • Cuud
  • Dddd

Q10:

A neutron is electrically neutral because the sum of the quark charges forming it equals zero. Which of the following is the correct combination of quarks in a neutron?

  • A3 down quarks
  • B3 up quarks
  • C1 up quark and 2 down quarks
  • D2 up quarks and 1 down quark

This lesson includes 15 additional questions and 33 additional question variations for subscribers.

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