Exam 11: The Chemical Elements

Only two elements, mercury and ______________, are liquid at room temperature and atmospheric pressure.

Earth's atmosphere is 78% ______________.

The three allotropes of carbon are graphite, the fullerenes, and ______________.

Homogeneous mixtures are

Which of the following polyatomic ions has a single minus charge?

What was the nationality of the first persons who we know speculated about "elements"?

Which of the following gases is monatomic?

When salt is dissolved in water, the salt is called the ______________.

Which of the five major divisions of chemistry is generally considered the most fundamental?

The symbol for lead is

An element that is malleable, ductile, and a good conductor of heat and electricity would be classified as a

An atom that has equal amounts of protons and electrons is a ______________ ion.

In a given period, the element of which group has the highest ionization energy?

Which science deals with the composition, structure, properties, and reactions of matter?

The element barium should produce compounds most similar to those of

The element potassium should produce compounds most similar to those of

Which is the formula for baking soda?

The first shell of an atom can hold a maximum of how many electrons?

A cola drink is a good example of

Arrange the atoms calcium, barium, chlorine, and bromine in order of increasing atomic radius.