Quarter 2 Review

In general, nonmetal are

• good conductors
• gases at room temperature
• malleable
• ductile

According to the law of conservation of mass, how does the mass of the products compare to the mass of the reactants?

• no relationship
• mass of products is greater
• mass of reactants are greater
• masses are equal

All _____ except mercury are solids at room temperature.

• metalloids
• nonmetals
• metals
• mixtures

How many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable?

• 2
• 4
• 6
• 8

Which category of elements represents almost 3/4 of the periodic table?

• gases
• metalloids
• metals
• nonmetals

Why do the nobel gases NOT form compounds readily?

• Their outer energy levels have 8 valence electrons.
• They have 7 electrons in the outer energy level.
• They have no electrons.
• They have empty energy levels.

Which elements are located between the metals and the nonmetals on the periodic table?

• halogens
• metalloids
• nobel gases
• synthetics

The energy levels of an atom are occupied by ___

• electrons
• protons
• neutrons
• ions

Dot diagrams are used to represent

• protons
• valence electrons
• atomic mass
• structure of the nucleus

How many dots are shown in the electron dot diagram from calcium?

• 1
• 2
• 8
• 20