DA 2 Review

A student wants to write a nuclear equation describing the alpha decay of polonium-210 into its daughter elements. Which items must be equal for the nuclear equation to be balanced? Select TWO answers.

• sum of the mass numbers

• sum of the isotope numbers

• sum of the electron numbers

• sum of the atomic numbers

• the individual ionic charges

Tags

NGSS.HS-PS1-8

What is the formula for the compound calcium nitrate that forms when calcium ions react with the nitrate ion?

• CaNO₃

• Ca(NO₃)₂

• CaNO₂

• Ca(NO₂)₂

What is the difference in energy released between fusion reactions and fission reactions?

• Fusion releases less energy than fission.

• Fusion and fission release the same amount of energy.

• Fission releases more energy than fusion because they involve splitting large nuclei into smaller ones. Fusion involves combining smaller nuclei into larger ones.

• Fusion releases more energy than fission.

Tags

NGSS.HS-PS1-8

The machine in the picture can be used to send gamma rays to destroy cells in specific parts of the body. Which statement best describes the use of the machine in medicine?

• The machine uses nuclear decay to treat a patient with radiation therapy.

• The machine uses nuclear decay to generate diagnostic images of a patient.

• The machine uses the photoelectric effect to introduce photons into a patient’s organs.

• The machine uses the photoelectric effect to take pictures of a patient’s organs.

Tags

NGSS.HS-PS1-8

NGSS.HS-PS4-3

The diagram below represents a nuclear reaction. Which of the following best describes this reaction?

• Nuclear fusion is occurring because many smaller nuclei are being fused.

• Nuclear fission is occurring because large amounts of energy are being absorbed.

• Nuclear fusion is occurring because many energetic neutrons are being emitted.

• Nuclear fission is occurring because a nucleus is being split into smaller nuclei.

Tags

NGSS.HS-PS1-8

Which of the following shows how Mendeleev would have arranged the following elements from left to right on the Periodic Table?

• Mg, F, K, Ar

• K, F, Mg, Ar

• F, Mg, K, Ar

• Ar, K, Mg, F

Tags

NGSS.HS-PS1-1

Complete the statements below about nuclear fission and fusion reactions.

• In nuclear fission, atomic nuclei split during a reaction, and in nuclear fusion, atomic nuclei collide during a reaction.

• In nuclear fusion, atomic nuclei split during a reaction, and in nuclear fission, atomic nuclei collide during a reaction.

• In nuclear fission, atomic nuclei collide during a reaction, and in nuclear fusion, atomic nuclei split during a reaction.

• In nuclear fusion, atomic nuclei collide during a reaction, and in nuclear fission, atomic nuclei split during a reaction.

Tags

NGSS.HS-PS1-8

Based on their location in the periodic table, which of the following pair of elements is expected to show similar properties?

• calcium and oxygen

• carbon and silicon

• lithium and fluorine

• aluminum and sulfur

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following lists shows the elemental symbols ranked in the order of increasing first ionization energy?

• A. Br, I, Cl, F

• B. I, Br, Cl, F

• C. F, Cl, I, Br

• D. I, F, Cl, Br

Tags

NGSS.HS-PS1-2

The table shows the number of each of the three subatomic particles for four atoms. Which atoms represent the same element? Select TWO correct answers.

• A. Atoms 1 and 3

• B. Atoms 2 and 4

• C. Atoms 1 and 2

• D. Atoms 3 and 4

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2