Isotopes and Ions: Key Differences Explained

What defines an isotope of an element?

• Atoms that have different atomic numbers

• Atoms with the same number of protons but different numbers of neutrons

• Atoms with different numbers of protons

• Atoms with different numbers of electrons

How do you calculate the number of neutrons in an isotope?

• Subtract the number of electrons from the atomic number

• Multiply the atomic number by two

• Add the number of protons and electrons

• Subtract the atomic number from the mass number

What happens when an atom loses one or more electrons?

• It becomes a neutron

• It remains neutral

• It forms an isotope

• It becomes a cation

Tags

NGSS.HS-PS1-2

What is the charge of a magnesium ion that has lost two electrons?

• +2 charge

• +1 charge

• Neutral

• -1 charge

What is the correct name for a negatively charged ion?

• Neutron

• Isotope

• Anion

• Cation

How does chlorine become a chloride ion?

• By gaining a proton

• By losing a proton

• By gaining an electron

• By losing an electron

What is the charge of an oxide ion?

• +1 charge

• Neutral

• -2 charge

• +2 charge

Tags

NGSS.MS-PS1-1

Which element forms a cation by losing electrons?

• Sodium

• Chlorine

• Carbon

• Oxygen

What is the difference between an isotope and an ion?

• There is no difference

• Isotopes have a charge, ions have different neutrons

• Isotopes have different neutrons, ions have a charge

• Isotopes have different protons, ions have different electrons

How are ions most commonly formed?

• Through nuclear reactions

• By isolating atoms

• By changing the number of protons

• When metallic elements combine with non-metallic elements