AP BIOLOGY 1.1-1.2

The number at the bottom of each square on the periodic table is the ...

• atomic number
• atomic mass
• chemical symbol
• element name

The number at the top of each square on the periodic table is the ...

• atomic number
• atomic mass
• Chemical Symbol
• Element Name

The atomic number tells you what?

• number of electrons

• number of protons (and electrons)

• number of neutrons

• number of quarks

A proton is....

• a negatively charged subatomic particle

• a positively charged subatomic particle

• a neutrally charged subatomic particle

• the only subatomic particle located in the nucleus

A neutron has a charge of

• +2
• No charge
• -1
• +1

How many electrons does Oxygen need to fill its outer shell?

• 3

• 4

• 1

• 2

How many valance electrons does nitrogen have?

• 7

• 8

• 5

• 3

An element's identity is determined by the number of

• electrons.

• protons.

• neutrons.

• mass.

How many electrons do atoms usually need in their 2nd or 3rd shell to be stable?

• 1

• 2

• 6

• 8

How many covalent bonds can one carbon atom form?

• 1

• 2

• 3

• 4