Unit #3: Periodic Trends Exam

Electronegativity is...

• the ability of an atom to attract electrons

• the ability of an atom to lose electrons

• the energy required to remove an electron from a specific atom

• how easy it is to bond with other elements

The majority of elements on the periodic table are

• semi-metals.

• nonmetals.

• metals.

• gases.

As you move down a group on the periodic table, the number of valence electrons....

• Increases

• Decreases

• Remains the same

All elements found on the left side of the Periodic Table of the Elements have what properties in common?

• They conduct heat and electricity

• They are all gases

• They are brittle and dull

• They explode when placed in contact with water

Based on their locations in the periodic table, which element has chemical properties most similar to those of calcium, Ca?

• beryllium, Be

• potassium, K

• titanium, Ti

• yttrium, Y

As you move down the periodic table atoms get bigger. This is because ____________.

• The atoms have more mass.

• The atoms have more protons.

• The atoms have more energy levels

• The atoms have more neutrons

The energy required to remove electrons is the definition of:

• Electronegativity

• Atomic Number

• Atomic Radius

• Ionization

Rows (left to right) on the period table are called _____ while columns (up and down) are called _____.

• groups, families

• groups, periods

• periods, groups

• families, groups

Which two groups on the Periodic Table are the MOST reactive?

• Group 1 and Group 17

• Group 2 and Group 16

• Group 13 and Group 15

• Group 17 and Group 18

Order the following in order of increasing (from smallest to biggest) atomic radius:

Ra, Be, Ca, Rb, H

• Ra, Be, Rb, H, Ca

• Rb, H, Ca, Be, Ra

• Ra, Rb, Ca, Be, H

• H, Be, Ca, Rb, Ra