C2 - Structure and Bonding

Complete the sentence: In covalent bonds, electrons are _______________________

• Lost

• Gained

• Halved

• Shared

What is the name given to the structure of diamond, graphite and silicon dioxide?

• Mega covalent structure

• Mega ionic lattice

• Giant covalent

• Giant ionic

Tags

NGSS.HS-PS1-3

How many bonds does each carbon have in diamond?

• 2

• 4

• 6

• 8

Explain why diamond has a high melting point

• Giant structure, strong covalent bonds between the atoms, requires a lot of energy to break

• Giant structure, weak covalent bonds between the atoms, requires little energy to break

• Mega structure, strong covalent bonds between the atoms, requires a lot of energy to break

• Mega structure, weak covalent bonds between the atoms, requires little energy to break

Tags

NGSS.HS-PS1-3

Explain why most giant covalent substances do not conduct electricity.

• There are no electrons/ions/charged particles that are free to move

• The electrons/ions/charged particles that are free to move

• The electrons/ions/charged particles cannot carry the charge

• There are not enough electrons/ions/charged particles to carry the charge through the structure

What type of substance are methane and water?

• Giant covalent molecules

• Simple covalent molecules

• Giant ionic lattice

• Metallic structure

Conductors due to delocalised electrons

• simple covalent molecules
• metallic
• ionic
• giant covalent 

Tags

NGSS.HS-PS1-3

Which of these is covalent?

• NaCl
• Pb(NO₃)₂
• CO₂
• AlCl₃

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In an ion, the metal ions tend to be _________ charged

• Positively

• Negatively

• Neutrally

• Reversely

All chemical bonds involve two atoms sharing electrons.

• True
• False