What happens during radioactive decay?A.An unstable nucleus gains mass until it becomes stable.B.An unstable nucleus loses particles until it becomes stable.C.An unstable nucleus absorbs radiation to make it stable.D.An unstable nucleus gains neutrons to make it stable.SUBMITarrow_backPREVIOUS

Which of the following is the best definition of radioactive decay?A.Radioactive decay is the splitting of a nucleus to produce huge amounts of energy.B.Radioactive decay is the release of energy resulting from a chemical reaction.C.Radioactive decay is the loss of mass that occurs when an atom is formed.D.Radioactive decay is the spontaneous breakdown of a nucleus into smaller parts.

What characterizes a radioactive atom?A.Its nucleus is unstable.B.Its electrons gain energy.C.Its protons repel the neutrons.D.Its nucleus has too few quarks.SUBMITarrow_backPREVIOUS

A radioactive element...A...has an unstable nucleus that will become stable if the element reacts with another element to form a compound.B...has an unstable nucleus that will become stable if more electrons are lost.C...has an unstable nucleus that will become stable if more electrons are added.D...has an unstable nucleus that will decay to produce a different element.

What makes a nucleus stable?A.A nucleus is stable if the electrostatic and strong nuclear forces balance out.B.A nucleus is stable if there are fewer neutrons than protons in the nucleus.C.A nucleus is stable if there is the same number of protons as electrons.D.A nucleus is stable if all of the electrons are in the lowest energy levels.

What happens during nuclear fission?Multiple choice question.A nucleus captures an inner electron.A nucleus splits into smaller nuclei.Nuclei combine to form a large nucleus.A nucleus decays by emitting alpha or beta radiation.