Select the option that best completes this sentence.All isotopes of potassium have the:same number of protons and same mass numbersame number of protons and different mass numbersame number of neutrons and same mass number

The isotopes of potassium are distinguished by their mass number.Recall the definition of mass number.The number of protons and electrons in an atomThe number of neutrons in the nucleus of an atomThe number of protons and neutrons in the nucleus of an atomThe number of protons in the nucleus of an atom

What do all atoms of potassium have in common?Group of answer choicesThey all have 19 protonsThey all have 20 neutronsThey all have a mass number of 39 Flag question: Question 2Question 21 ptsThe atomic number of an element is always the same as the number of what particle in its atoms' nuclei?Group of answer choicesprotonsneutronselectronsisotopes Flag question: Question 3Question 31 ptsHow many protons are in an atom of carbon-14 Download carbon-14?Group of answer choices682014 Flag question: Question 4Question 41 ptsIn the nuclide symbol for potassium-39 Download potassium-39, what does 19 represent?Group of answer choicesnumber of protons and neutrons added togethernumber of neutronsmass numbernumber of protons Flag question: Question 5Question 51 ptsIn the nuclide symbol Download symbolfor potassium-39, what does the 39 stand for?Group of answer choicesnumber of protons and neutrons added togethernumber of protonsatomic numbernumber of neutrons Flag question: Question 6Question 61 ptsWhat is the mass number of carbon-14 Download carbon-14?Group of answer choices682014 Flag question: Question 7Question 71 ptsWhat is the name for atoms of the same element with different numbers of neutrons?Group of answer choicesprotonsnucleineutronsisotopes Flag question: Question 8Question 81 ptsWhat can be calculated by adding the number of protons and neutrons in an atom's nucleus?Group of answer choicesatomic numbermass numbernumber of protonsnumber of isotopes Flag question: Question 9Question 91 ptsWhich particle in the nucleus can be different for atoms of the same element?Group of answer choicesprotonsneutronselectronsisotopes Flag question: Question 10Question 101 ptsHow do the nuclear reactions that power the Sun compare to the nuclear reactions that occur in a reactor at a nuclear power plant?Group of answer choicesThe Sun is powered via nuclear fusion while a nuclear power facility harnesses energy from nuclear fission.The Sun is powered via nuclear fission while a nuclear power facility harnesses energy from nuclear fusion.Both the Sun and a nuclear power facility are powered by nuclear fusion reactions.Both the Sun and a nuclear power facility are powered by nuclear fission reactions. Flag question: Question 11Question 111 ptsWhich occurs in a fission reaction?  Group of answer choicesEnergy is absorbed as a less stable element forms.A new heavier element is formed and energy is released.Energy is converted into mass and forms a heavier element.The nuclei of atoms are split apart and energy is released. Flag question: Question 12Question 121 ptsOne kilogram of uranium can produce as much energy as 16,000 kilograms of coal. Why is the energy output for uranium so much greater than the energy output for coal?Group of answer choicesUranium is more highly purified than coal.Uranium is a highly reactive metal that reacts violently with oxygen when it burns.Uranium undergoes fission and nuclear reactions give off more energy than chemical reactions.Uranium is extremely radioactive and gives off more electromagnetic radiation than burning coal. Flag question: Question 13Question 131 ptsWhich occurs in a fusion reaction between two atoms?Group of answer choicesEnergy is absorbed as a less stable element forms.A new element is formed and energy is released.Energy is converted into mass and forms a heavier element.The nuclei of the atoms are split apart and energy is released. Flag question: Question 14Question 141 ptsIn what way are nuclear fission and nuclear fusion similar?Group of answer choicesBoth processes involve the decay of nuclei of atoms.Both processes result in formation of one or more new elements.Both processes are currently used to generate electrical energy.Both processes occur naturally inside the core of a star. Flag question: Question 15Question 151 ptsWhat type of nuclear reaction is shown in the equation Download equation?Group of answer choicesnuclear fissionnuclear fusionalpha decaybeta decay Flag question: Question 16Question 161 ptsWhat type of nuclear reaction is shown in the equation Download equation?Group of answer choicesnuclear fissionnuclear fusionalpha decaybeta decay

Isotopes of an element have different mass numbers. Complete the sentence to explain why.  Because they have different numbers of:neutronsprotonselectrons

What is the mass number of an isotope equal to?Choose 1 answer:Choose 1 answer:(Choice A)   the number of protons plus the number of neutronsAthe number of protons plus the number of neutrons(Choice B)   the number of protons plus the number of electronsBthe number of protons plus the number of electrons(Choice C)   the number of protons minus the number of neutronsCthe number of protons minus the number of neutrons(Choice D)   the number of protons minus the number of electronsDthe number of protons minus the number of electrons

Which statement is correct about the isotopes of an element?A. They have the same mass numberB. They have the same electron arrangementC. They have more protons than neutronsD. They have the same numbers of protons and neutrons