Exploring the Formation and Charge of Ions

What is an ion?

• A molecule with a neutral charge

• An atom or group of atoms with a net positive or negative charge

• A particle found in the nucleus of an atom

• An atom with no charge

What particles are found in the nucleus of an atom?

• Neutrons and electrons

• Protons and neutrons

• Only electrons

• Electrons and protons

What is the octet rule?

• Atoms aim to have eight electrons in their valence shell

• Atoms aim to have eight atoms in a molecule

• Atoms aim to have eight neutrons in their nucleus

• Atoms aim to have eight protons in their nucleus

How many electrons does chlorine have in its valence shell before gaining an extra electron?

• 8

• 7

• 6

• 5

What is the charge on a chlorine ion after it gains an extra electron?

• Negative one

• Neutral

• Positive one

• Positive two

What is the term for a negatively charged ion?

• Neutron

• Proton

• Anion

• Cation

How many electrons does sodium have in its valence shell before losing an electron?

• 8

• 7

• 2

• 1

What is the charge on a sodium ion after it loses an electron?

• Positive two

• Positive one

• Neutral

• Negative one

What is the term for a positively charged ion?

• Proton

• Anion

• Cation

• Neutron

Which group in the periodic table is already stable and does not form ions?

• Transition metals

• Noble gases

• Halogens

• Alkali metals