Chemistry Periodic Table- quiz

An element that is a very reactive gas is most likely a member of the...

• noble gases

• alkali metals

• halogens

• actinides

Elements in a family or group in the periodic table often share similar properties because...

• they look alike.
• they are found in the same place on Earth.
• they have the same physical state
• their atoms have the same number of electrons in their outer energy level

Alkali metals are the most reactive of all the metals because they have ____ electron(s) in their outer energy level.

• 1
  
• 2
• 7
• 8

Valence electrons are...

• the total number of electrons in an atom

• the number of electrons on the first energy shell of an atom

• the number of electrons on the outermost energy shell of an atom

The ______ tells you how many energy shells an atom has.

• group number

• period number

Which of the following elements would have 2 valence electrons?

• Lithium

• Calcium

• Boron

• Chlorine

Carbon-12, Carbon-13, and Carbon-14 are...

• ions
• isotopes
• electronegative
• radioactive

How many Protons does Bromine have?

• 45
• 79.904
• 80
• 35

The rows are called

• periods

• groups

• families

• lines

Elements in the periodic table are arranged in order of:

• type of element

• increasing atomic number

• decreasing atomic number

• atomic mass