Question

(c.6b) match each term and definition. this is a subatomic particle with a negative charge and very little mass. choose this is an atom that has lost or gained electrons. choose this is a group of protons and neutrons in the center of all atoms. choose this is a subatomic particle with a positive charge and a mass of 1 amu. choose this is a subatomic particle with no charge and a mass of 1 amu. choose choices: ion, electron, neutron, proton, isotopes, nucleus.

Explanation:

First Term - "This is a subatomic particle with a negative charge and very little mass."

Electrons are subatomic particles that have a negative charge and a very small mass (much smaller than protons and neutrons). So this term matches with "Electron".

An ion is defined as an atom (or a group of atoms) that has a net electric charge because it has lost or gained one or more electrons. So this term matches with "Ion".

The nucleus of an atom is the central part that contains protons and neutrons. So this term matches with "Nucleus".

Answer:

Electron

Second Term - "This is an atom that has lost or gained electrons."