Units 2-3 Review

What does the 6 represent?

• Atomic mass

• atomic number

• chemical symbol

• element name

What subatomic particles would you find in the nucleus of an atom?

• Protons only
• Protons and Neutrons
• Neutrons and Electrons
• Protons and Electrons 

The electrons in the outer most energy level of an atom is also known as

• Active electrons

• Inert electrons

• Valence electrons

• None of the above

The horizontal rows in a periodic table are known as

• Groups

• Columns

• No name

• Periods

What is the mass number?

• the number of protons in the nucleus

• the number of protons and neutrons in the nucleus

• the number of neutrons in the nucleus

• the number of protons and electrons in the atom

Which of the following is the atomic number of an alkali metal?

• 31
• 20
• 18
• 19

What group on the Periodic Table contains the elements of the alkaline earth family?

• 1
• 2
• 17
• 18

What family does Gold (Au) belong to?

• Transition Metal
• Alkali Metal
• Alkaline Earth Metal
• Heavy Metal

What family does Argon (Ar) belong to?

• alkali metal
• alkaline earth metal
• halogen
• noble gas

How many valence electrons does an alkaline earth metal have? 

• 1
• 2
• 7
• 8