AP Final Exam Fall Semester

Front

What is the coefficient of H₂SO₄ when the following equation is properly balanced? Ca₃(PO₄)₂ + ___ H₂SO₄ → ___ CaSO₄ + ___ H₃PO₄

Back

3

Front

What is the trend in Coulombic attraction going down a group?

Back

Coulombic attraction decreases moving down a group.

Front

Which element has the lowest electronegativity? Rb, F, Ne, He, Na

Back

Rb

Front

Which of the following pairs of elements can be joined by a covalent bond? Na and C, Li and Na, N and O, Ca and Xe

Back

N and O

Front

What is the correct name for FeCl₃?

Back

Iron (III) chloride

Front

Define Coulombic attraction.

Back

Coulombic attraction is the force of attraction between positively and negatively charged particles.

Front

What is electronegativity?

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

What type of bond is formed between two nonmetals?

Back

Covalent bond.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full set of eight valence electrons.

Front

What is the formula for calculating the number of moles?

Back

Number of moles = mass (g) / molar mass (g/mol).