Pre-AP Chemistry Midterm Test Review

Front

What sublevel do the valence electrons of Group 2 elements occupy?

Back

s

Front

Which equation does not describe an inverse proportionality between x and y?

Back

k = x/y

Front

How do you calculate the number of moles from mass?

Back

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

Front

What is the molar mass of Mercury (Hg)?

Back

200.59 g/mol.

Front

How many moles are in 50.15 g of Mercury?

Back

0.2500 mol.

Front

What does the law of conservation of mass state?

Back

The mass of the products equals the mass of the reactants.

Front

According to Bohr's model, where can electrons not reside?

Back

Electrons cannot reside at point c.

Front

What is the formula for inverse proportionality?

Back

xy = k.

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons determine how an element can bond with others.

Front

What is the relationship between mass and chemical reactions?

Back

Mass is conserved in chemical reactions.