C3-8 Covalent Bonding

Covalent bonds form between which of the following?

• metal and non-metal ion

• non-metal and non-metal ions

• metal and non-metal atoms

• non-metal atoms only

Single covalent bonds form when...

• atoms share a pair of electrons

• atoms donate electrons

• atoms share an electron

• atoms form compoounds

Tags

NGSS.MS-PS1-1

In a covalent bond the electrons involved in bonding are...

• attracted to each other

• attracted to other pairs of electrons

• attracted to other paired electrons

• attracted to the nucleus of each atom

Tags

NGSS.MS-PS1-1

Covalent bonds are every strong. What type of forces hold the bond together making them so strong?

• Magnetic

• Friction

• Electrostatic

• Electromagnetic

Tags

NGSS.HS-PS1-2

NGSS.HS-PS2-4

Dot and cross diagrams are used to show bonding in covalent compounds. Which of the following is NOT an advantage of this type of diagram?

• Show the overlap of outer electron shells

• Show the atoms which share electrons

• Show the number of shared electron pairs

• Show the sizes of the atoms sharing electrons

Displayed formula shows covalent bonds as a single line between atoms. Which of the following is NOT shown in this type of formula?

• How atoms are connected

• 3D structure

• Which atoms the electrons come from

• The number of each type of atom in the compound

Tags

NGSS.MS-PS1-1

Three dimensional ball and stick models show the atoms (ball), the covalent bonds (sticks) and their arrangement in space. What is no shown in this type of model?

• electron pairs

• shared electrons

• number of atoms involved

• where the electrons have come from

Tags

NGSS.MS-PS1-1

The diagram shows the ball and stick model for ammonia. Molecular formula show how many and which atoms are in a compound.

What is the molecular formula of ammonia?

• H2NH

• NH3

• HNHH

• H2NH

Tags

NGSS.MS-PS1-1

What type of formula is shown in the diagram?

• Dot and cross

• Ball and stick

• Displayed formula

• Molecular formula

Tags

NGSS.MS-PS1-1

What type of formula is shown in the diagram?

• Dot and cross

• Ball and stick

• Displayed formula

• Molecular formula