Nuclear Chemistry Intro

Categorize

Options (11)

Atoms are rearranged by the breaking and forming of chemical bonds.

Only electrons in atomic or molecular orbitals are involved in the breaking and forming of bonds

Reactions are accompanied by absorption or release of relatively small amounts of energy.

Rates of reaction are influenced by temperature, pressure, concentration, and catalysts.

Elements (or isotopes of the same elements) are converted from one to another.

Protons, neutrons, electrons, and other elementary particles may be involved.

Reactions are accompanied by absorption or release of tremendous amounts of energy.

Rates of reaction normally are not affected by temperature, pressure, and catalysts.

Can produce new substances with different properties.

Can involve changes in energy.

Involves only a physical change, such as a change in state.

Categorize the following characteristics into Chemical Reactions, Nuclear Reactions, Both, or Neither

Chemical Reactions

Nuclear Reactions

True for Both

True for Neither

Multiple Choice

Which of the following is the correct description of the three types of radioactive decay?

• Alpha decay releases electrons, beta decay releases helium nuclei, gamma decay releases energy.

• Alpha decay releases helium nuclei, beta decay releases electrons or positrons, and gamma decay releases photons.

• Alpha decay releases photons, beta decay releases neutrons, gamma decay releases protons.

• Alpha decay involves a loss of neutrons, beta decay involves a change in protons, and gamma decay releases electrons.

Multiple Choice

Why is the strong nuclear force crucial for the stability of atomic nuclei?

• It holds protons and electrons together.

• It prevents the repulsion between protons in the nucleus.

• It helps atoms bond with each other.

• It causes the decay of radioactive isotopes.

Multiple Choice

How is the radiometric dating done to determine the age of fossils or rocks?

• By measuring the temperature at which a substance decays.

• By counting the number of protons in the sample.

• By determining how many half-lives have passed based on the remaining amount of a radioactive isotope.

• By observing the chemical changes that occur over time.