Covalent bonding 2

How many valence electrons does nitrogen have?

• 3
• 2
• 5
• 1

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What can be generalized about covalent bonds?

• Electrons will be exchanged.
• Electrons will be transferred.
• Electrons will be given and taken.
• Electrons will be shared.

Carbon is in 4A, so how many bonds can it form based on electrons needed to fill its outer shell?

• 1

• 3

• 4

• 5

Tags

NGSS.HS-PS1-1

What two types of atoms make a covalent bond?

• 2 Nonmetals
• 1 Nonmetal & 1 Metal
• 2 Metals
• 2 Noble Gases

Tags

NGSS.MS-PS1-1

What is a diatomic element?

• a metal bonded with a nonmetal
• 2 or more nonmetals bonded together
• 2 or more metals bonded together
• 2 atoms of the same element bonded together

What is the correct formula for this molecule?

• CH

• C₁H⁴

• CH₄

• C₄H

Tags

NGSS.HS-LS1-6

Why are dots and crosses used to show the electrons in the bonds?

• To show which atoms the electrons belong to

• Because this is what electrons looks like

• To show if the electron came from a metal

• To show if the electrons are gained or lost

Single bonds are formed when ____ pair(s) of valence electrons are shared.

• one

• three

• two

• four

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the correct formula for this molecule?

• NH
• N₃H
• NH₃
• NH₄

Tags

NGSS.MS-PS1-1

How many electrons are involved in bonding in this molecule?

• 2

• 3

• 4

• 8