Unit 1: Chemistry Pretest

What elements generally make an ionic bond ?

• Metal and nonmetal

• 2 or more nonmetals

• 2 or more metals

• 2 elements

An ionic bond is formed when

• Valence electrons are shared.

• Valence electrons surround the cations.

• Valence electrons are transferred between atoms.

• Valence electrons are completely transferred between two metals.

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 electon found in the nucleus

What is the number of valence electrons of Oxygen?

• 1

• 2

• 6

• 8

What is the number of valence electrons of Neon?

• 6

• 7

• 8

• 9

What type of diagram is this?

• Alkali Diagram

• Bohr Model

• Chemical Diagram

• Electron Dot Diagram

How many valence electrons in this structure ?

• 4

• 5

• 6

• 7

How many electrons are being shared between the two carbon atoms in the compound ethyne?

• 1

• 2

• 3

• 6

Predict the bond that will form between Se and Cl

• Ionic-bond

• Covalent-bond

• Metallic-bond

• Hydrogen-bond

The electronic configuration of Boron (Z=5) is:

• K³

• K¹L⁴

• K⁴L¹

• K²L³