Chemical Bonding

 

What is a valence electron?

• an electron that is found in the outermost shell of an atom.

• an electron found in the innermost shell of an atom.

• an electron found in the middle shell.

• an electron found in the first shell.

What is the number of valence electrons for Carbon?

• 1

• 2

• 3

• 4

A covalent bond forms when atoms ________ electrons.

• gain

• share

• transfer

• increase

 Which type of bond is formed from the transfer of one or more electrons from one atom to another?

• polar covalent

• non- polar covalent

• ionic

• metallic

 Which type of bond is formed from the sharing of electrons between atoms?

• covalent

• ionic

• metallic

• non- ionic

Ionic bonding is formed between a ___ and ___.

• metal and non- metal

• metal and metal

• non- metal and non- metal

• noble gasses

Predict the bond that will be formed between Mg and Cl

• covalent

• ionic

• non- ionic

• metallic

Which of the following is ionic?

• NO₂

• MgO

• CO

• CH₄

Chemical bonds are formed when atoms ____

• combined nuclei

• give up neutrons

• share or transfer electrons

• gain protons

What usually forms the positive ion?

• Metal

• Non- metal

• Alloy

• Metalloid