Chapter 9 Elements and Chemical Bonds Lesson 1

Multiple Choice

Why is the periodic table considered an important tool in chemistry?

• Because it organizes elements by their properties and helps predict chemical behavior

• Because it lists all known compounds

• Because it shows the history of chemistry

• Because it is used only for decoration

Multiple Choice

Which property is shared by elements in the same group of the periodic table?

• They have the same number of valence electrons.

• They have the same atomic number.

• They are all metals.

• They are all gases.

Multiple Choice

Which of the following statements about electrons and bonding is/are correct?

• Low level electrons are most strongly attracted to the nucleus.

• Outermost (valence) electrons can be attracted to the nucleus of other atoms.

• The attractive force between valence electrons and other nuclei causes chemical bonds.

• All of the above.

Multiple Choice

According to Lewis Dot Structures, why are atoms with 8 dots generally nonreactive?

• They have a complete outer energy level.

• They have no electrons.

• They are metals.

• They are unstable.

Multiple Choice

What basic properties of elements can you find in each block of the Periodic Table?

• State of matter at room temperature, atomic number, atomic mass

• Color, melting point, boiling point

• Density, solubility, reactivity

• Shape, size, volume