Counting Atoms

The building blocks of all matter is:

• cells

• elements

• atoms

• mass

Which of the following are found on the Periodic Table?

• Elements

• Compounds

• Molecules

• Atoms

How many electrons are needed to make the element in the picture neutral?

• 4

• 16

• 8

• 32

A sodium atom has 11 protons and 10 electrons. What is its charge?

• +11

• -1

• +1

• -10

What does the 4 represent?

• period number

• atomic number

• element name

• chemical symbol

Which of the following is a molecule but not a compound?

• O

• H2

• H2O

• C6H12O6

What does the number of protons in an atom tell us?

• The number of electrons

• The atomic number

• The atomic mass

• The number of neutrons

If an atom has 6 protons, 7 neutrons, and 6 electrons, what is its charge?

• Positive

• Negative

• Neutral

• Not enough information

The positively charged part of an atom that is found in the nucleus is the...

• proton

• neutron

• electron

• element

What part of an atom has no charge and is found in the nucleus?

• proton

• neutron

• electron

• element