Chemistry Final Review

Chemistry Final Review

June 10, 2021

Open Ended

A. Element name =

C. Element symbol =

D. Atomic number =

E. Molar mass =

F. Number of electrons =

G. Number of protons =

H. Number of neutrons =

Reading an element square

• Top number is the atomic number

• Bottom number is the mass number (round to nearest whole number)

• Atomic # = # protons = # electrons

• # neutrons = mass # - atomic #

Multiple Choice

Is this the correct bohr model for Aluminum?

• Yes

• No

How to read a bohr model

• # of protons & # of neutrons written in the nucleus

• Electrons placed on the rings in the order: 2, 8, 18

Open Ended

What is the electron configuration of Aluminum?

How to write an electron configuration?

Start from hydrogen with 1s and go through every orbital (2s, 2p, etc.) until you get to your element.

Aluminum is in the 3p1 space, so that should be the last part.

1s2 2s2 2p6 3s2 3p1

Open Ended

What is the noble gas configuration of Aluminum?

How to write a noble gas configuration?

Start from the noble gas (group 18) that comes before your element and go through every orbital (2s, 2p, etc.) until you get to your element.

The noble gas that come before Aluminum is [Ne] and Aluminum is in the 3p1 space, so that should be the last part.

[Ne] 3s2 3p1

Open Ended

A. If 3 electrons are removed from an atom of Aluminum, what charge would the atom have?

B. What is the name for atoms with a charge?

C. Is this a cation or an anion? Why?

D. Is this ion most likely a metal or a nonmetal?

Answers

• A. If 3 electrons are removed from an atom of Aluminum, what charge would the atom have?

• B. What is the name for atoms with a charge?

• C. Is this a cation or an anion? Why?

  
  

• D. Is this ion most likely a metal or a nonmetal?

Open Ended

A. Using the periodic table above, what group is Aluminum in?

B. What period is Aluminum in?