• Why do atoms gain or lose valence electrons?

TO BECOME STABLE

• Why do atoms gain or lose valence electrons?

• Which group of elements are the most stable?

NOBLE GASES

• Which group of elements are the most stable?

• Why are noble gases stable?

THEY HAVE A FULL SHELL OF VALENCE ELECTRONS

• Why are noble gases stable?

• What does each dot represent in an electron dot diagram?

EACH DOT REPRESENTS A VALENCE ELECTRON.

• What does each dot represent in an electron dot diagram?

• Which elements generally have higher ionization energies?

NONMETALS HAVE HIGHER IONIZATION ENERGY THAN METALS, NOBLE GASES ARE

HIGHEST

• Which elements generally have higher ionization energies?

• What happens to valence electrons when atoms form ionic bonds?

VALENCE ELECTRONS ARE TRANSFERRED OR GIVEN

AND TAKEN.

• What happens to valence electrons when atoms form ionic bonds?

• What are the properties of ionic compounds?

1. SOLID CRYSTALS.2. HIGH MELTING POINT.3. BRITTLE.

• What are the properties of ionic compounds?

• Which types of atoms bond to form molecules?

NONMETALS BOND TOGETHER TO FORM

MOLECULES

• Which types of atoms bond to form molecules?

• What type of molecule is formed when two atoms of the same nonmetal join together?

DIATOMIC MOLECULE

• What type of molecule is formed when two atoms of the same nonmetal join together?

• What holds atoms together in an ionic bond?

THE ATTRACTION BETWEEN POSITIVE CATIONS AND

NEGATIVE ANIONS

• What holds atoms together in an ionic bond?

• What holds atoms together in a covalent bond?

THE SHARED VALENCE ELECTRONS ATTRACT AND

HOLD THE ATOMS IN.

• What holds atoms together in a covalent bond?

• What holds metal atoms together in a metallic bond?

THE ATTRACTION BETWEEN A METAL CATION AND THE

SHARED SEA OF ELECTRONS

• What holds metal atoms together in a metallic bond?

• Why are metals good conductors of electricity?

THE SEA OF ELECTRONS ALLOWS ELECTRICITY TO

PASS THROUGH.

• Why are metals good conductors of electricity?

• Why does water form drops or puddle up?

WATER MOLECULES ARE POLAR AND ARE ATTRACED

TO EACH OTHER - COHESION.

• Why does water form drops or puddle up?

• Which types of elements will always form cations or positive ions?

METALS OR GROUP 1A, GROUP 2A AND GROUP 3A

• Which types of elements will always form cations or positive ions?

• Which types of elements will always form anions or negative ions?

NONMETALS, OR GROUP 5A, GROUP 6A AND GROUP 7A

• Which types of elements will always form anions or negative ions?

• In an ionic compound, the positive and negative charges must add up to what sum?

POSITIVE AND NEGATIVE CHARGES MUST ADD UP TO

ZERO.

• In an ionic compound, the positive and negative charges must add up to what sum?

• In a chemical formula, which element is written first?

METALS, POSITIVE CHARGES, OR LOWER

GROUP NUMBER GO FIRST.

• In a chemical formula, which element is written first?

• When do you need to add a numerical prefix in a chemical name?

WHEN NONMETALS FORM A COVALENT MOLECULE.

• When do you need to add a numerical prefix in a chemical name?

• What does the subscript 2 mean in the formula H2O?

THE SUBSCRIPT MEANS THERE ARE TWO HYDROGEN

ATOMS.

• What does the subscript 2 mean in the formula H2O?

• What do roman numerals such as II, III or IV mean in a chemical name?

A ROMAN NUMERAL INDICATES THE ION’S

POSITIVE CHARGE.

• What do roman numerals such as II, III or IV mean in a chemical name?

• What is an alloy?

A MIXTURE OF TWO OR MORE ELEMENTS AT LEAST ONE OF WHICH IS A METAL.

• What is an alloy?

• What are some common alloys?

STEEL – IRON AND CARBON.BRASS – ZINC AND COPPER.

AIRCRAFT ALUMINUM – ALUMINUM AND

MAGNESIUM.

• What are some common alloys?