0625 IGCSE Physics Nuclear Atom MCQ 1

Draw

NUCLIDE

Multiple Choice

A nuclide has the symbol $$_{10}^{22}Ne$$   .What is the proton number of a nucleus of this nuclide?

• A 10

• B 12

• C 22

• D 32

Multiple Choice

A nuclide is represented by the notation shown.

$$_Q^PX$$  

How many nucleons are there in one atom of this nuclide?

• P

• Q

• P + Q

• P - Q

Multiple Choice

The diagram represents a carbon atom.

What is the nucleon number (mass number) for this atom?

• 6

• 8

• 14

• D 20

Open Ended

Isotopes are atoms that have the same number of protons and electrons but different numbers of neutrons and therefore have different physical properties.

Write the 3 NUCLIDE of Hydrogen

Multiple Choice

A certain element has several isotopes. Which statement about these isotopes is correct?

• A They must have different numbers of electrons orbiting their nuclei.

• B They must have the same number of neutrons in their nuclei.

• C They must have the same number of nucleons in their nuclei.

• D They must have the same number of protons in their nuclei

Draw

What is an Alpha Particle?

Multiple Choice

A uranium $$_{92}^{238}U$$   nucleus emits an α-particle. What are the new nucleon and proton numbers?

• nucleon number: 238

  Proton Number: 88

• nucleon number: 236

  Proton Number: 90

• nucleon number: 234

  Proton Number: 92

• nucleon number: 234

  Proton Number: 90

Multiple Choice

The nucleus of an americium atom contains 146 neutrons and 95 protons. It decays by emitting an α-particle. How many neutrons and how many protons remain in the nucleus when this form of americium decays?

• Number of neutrons remaining: 142

  Number of protons remaining: 93

• Number of neutrons remaining: 142

  Number of protons remaining: 95

• Number of neutrons remaining: 144

  Number of protons remaining: 93

• Number of neutrons remaining: 144

  Number of protons remaining: 95

Multiple Choice

A nucleus of helium has the symbol $$_2^3He$$  

Which diagram represents an atom of $$_2^3He$$ ?

Draw

The scattering of α-particles by a thin metal foil supports the nuclear model of an atom. Rutherford scattering experiment

Multiple Choice

The scattering of α-particles by a thin metal foil supports the nuclear model of an atom. Why are α-particles used rather than neutrons?

• because they always travel more slowly

• because they are heavier

• because they are larger in diameter

• because they have a positive charge

Multiple Choice

Which diagram represents an experiment that provided evidence for the nuclear atom?

• A

• B

• C

• D

Multiple Choice

Radioactive carbon-14 decays into nitrogen by emitting a β-particle. The equation below represents the decay

$$_p^{14}C\ \rightarrow\ _7^{14}N\ +\ _Q^0\beta$$  

• P : 6

  Q : 1

• P : 6

  Q : -1

• P : 8

  Q : 1

• P : 8

  Q : -1

Multiple Choice

The graph shows how the count rate on a detector due to a radioactive source changes with time.

What is the count rate at 5.0 hours?

• A 960 counts per minute

• B 600 counts per minute

• C 150 counts per minute

• D 0 counts per minute

Multiple Choice

How many neutrons are in a nucleus of the nuclide $$_{17}^{37}Cl$$  

• 17

• 20

• 37

• 54

Multiple Choice

A neutral atom consists of electrons orbiting a nucleus. The nucleus contains protons and neutrons. Which statement about the atom must be correct?

• A The number of electrons is equal to the number of neutrons.

• B The number of electrons is equal to the number of protons.

• C The number of neutrons is equal to the number of protons.

• D The number of electrons, neutrons and protons are all different

Multiple Choice

Which two nuclides are isotopes of the same element?

• A nuclide 1 and nuclide 2

• B nuclide 2 and nuclide 3

• C nuclide 2 and nuclide 5

• D nuclide 4 and nuclide 5

Multiple Choice

A proton and a neutron are each close to a positive nucleus.

How does the charge on the nucleus affect the proton and the neutron, if at all?

• A The neutron is attracted; the proton is repelled.

• B The neutron is not affected; the proton is repelled.

• C The proton is attracted; the neutron is repelled.

• D The proton is not affected; the neutron is repelled.

Multiple Choice

Below are four statements about isotopes of a certain element. Which statement about the isotopes must be correct?

• A They are radioactive.

• B They are unstable

• C They have the same number of neutrons

• D They have the same number of protons.

Multiple Choice

A nucleus of element X is represented as $$_{26}^{56}X$$  

Which is an isotope of element X?

• $$_{56}^{26}X$$

• $$_{26}^{54}X$$

• $$_{24}^{56}X$$

• $$_{28}^{54}X$$

Multiple Choice

The charge on a proton is e. What is the charge on an electron and what is the charge on a neutron?

• electron e

  neutron e

• electron e

  neutron 0

• electron -e

  neutron -e

• electron -e

  neutron 0

Multiple Choice

A particular nuclide has the symbol $$_{17}^{37}Cl$$   What is true for atoms of this nuclide?

• A There are 17 nucleons in the nucleus.

• B There are 17 protons in the nucleus.

• C There are 37 electrons in the nucleus.

• D There are 37 neutrons in the nucleus

Multiple Choice

$$_6^{14}C$$   is a nuclide of carbon. What is the composition of one nucleus of this nuclide?

• neutrons 6

  protons 8

• neutrons 6

  protons 14

• neutrons 8

  protons 6

• neutrons 14

  protons 6