Chapter 5 test

Match the vocabulary term with the correct definition: an element or compound that conducts electric current better than an insulator does but not as well as a conductor does.

• Semiconductor
• ion

Match the vocabulary term with the correct definition: an element that is shiny and that conducts heat and electricity well.

• Metal
• group

Match the vocabulary term with the correct definition: the law that states that the repeating chemical and physical properties of elements change periodically with the atomic numbers of the elements.

• Periodic law
• period

Match the vocabulary term with the correct definition: a vertical column of elements in the periodic table; elements in a group share chemical properties.

• Nonmetal

• Group

As you move across a period (from group 1 to group 18) what happens to the number of valence electrons?

• Increases

• Decreases

Match the vocabulary term with the correct definition: in chemistry, a horizontal row of elements in the periodic table.

• Ion

• Period

Circle the element that is NOT a transition metal:

• Na

• Fe

What element is found in group 14 period 5?

What element is in group 2 period 3?

How many valence electrons do elements in group 14 have?