The emission spectra is produced when

electrons release energy as they return to the ground state.

electrons release energy as they move to their excited state.

electrons absorb energy as they move to their excited state.

electrons absorb energy as they return to the ground state.

Absorption line spectra is caused by ...

electrons absorbing energy of the same frequency as the electromagnetic radiation incident on the atom

electrons emitting energy of the same frequency as the electromagnetic radiation incident on the atom

photons emitting energy of the same frequency as the electromagnetic radiation incident on the atom

photons absorbing energy of the same frequency as the electromagnetic radiation incident on the atom

Of the main types of radiation emitted from naturally radioactive isotopes, which is the hardest to block?

They are all blocked using the same method

Question 4 A β ⁻¹ particle is emitted when a

C a nucleus has too many electrons

D a nucleus has too many protons

SL Nuclear Quiz: 15 Practice Questions (Grade 12)

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is likely to happen to unstable nuclei with too many, or too few, neutrons?

They will decay by emitting radiation.

They will loose all their electrons.

They will bond with other atoms.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of radioactive decay involves the emission of a helium nucleus?

Alpha decay

Beta decay

Gamma decay

Neutron emission

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The half-life of a radioactive isotope is 10 years. If you start with 80 grams, how much will remain after 30 years?

10 grams

20 grams

5 grams

40 grams

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following equations represents a nuclear reaction?

$^{14}_6C \rightarrow ^{14}_7N + e^-$

$2H_2 + O_2 \rightarrow 2H_2O$

$C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O$

$NaCl \rightarrow Na^+ + Cl^-$

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following particles is emitted during beta decay?

Proton

Neutron

Electron

Alpha particle

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a sample of a radioactive substance has a half-life of 5 years, what fraction of the original sample remains after 15 years?

$\frac{1}{8}$

$\frac{1}{4}$

$\frac{1}{2}$

$\frac{1}{16}$

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

X is a radioactive nuclide that decays to a stable nuclide. The activity of X falls to 1/16th of its original value in 32 s.What is the half-life of X?

A. 2 s

B. 4 s

C. 8 s

D. 16 s

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SL Nuclear

What is likely to happen to unstable nuclei with too many, or too few, neutrons?

Which type of radioactive decay involves the emission of a helium nucleus?

The half-life of a radioactive isotope is 10 years. If you start with 80 grams, how much will remain after 30 years?

Which of the following equations represents a nuclear reaction?

Which of the following particles is emitted during beta decay?

If a sample of a radioactive substance has a half-life of 5 years, what fraction of the original sample remains after 15 years?

X is a radioactive nuclide that decays to a stable nuclide. The activity of X falls to 1/16th of its original value in 32 s.What is the half-life of X?

Which property of a nuclide does not change as a result of beta decay?

Which of the following atomic energy level transitions corresponds to photons of the shortest wavelength?

A radioactive nuclide with atomic number Z undergoes a process of beta-plus (β+) decay. What is the atomic number for the nuclide produced and what is another particle emitted during the decay?

Access all questions and much more by creating a free account

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