C4-8 Corrosion

Which of these definitions defines oxidation?

• Oxidation is the process in which a substance gains electrons.

• Oxidation is the process in which a substance combines with oxygen.
• Oxidation is the process in which a substance undergoes a physical change.
• Oxidation is the process in which a substance decreases its oxidation state.

Which of these definitions defines oxidation?

• Oxidation is the process in which a substance loses electrons.

• Oxidation is the process in which a substance is substituted oxygen.

• Oxidation is the process in which a substance undergoes a physical change.
• Oxidation is the process in which a substance decreases its oxidation state.

Tags

NGSS.HS-PS1-1

Which of these definitions defines reduction?

• Reduction is the process in which a substance loses electrons.

• Reduction is the process in which oxygen is removed from a compound.

• Reduction is the process in which a substance undergoes a physical change.

• Reduction is the process in which a substance increases its oxidation state.

Which of these definitions defines reduction?

• Reduction is the process in which a substance gains electrons.

• Reduction is the process in which oxygen is substituted in a compound.

• Reduction is the process in which a substance undergoes a physical change.

• Reduction is the process in which a substance increases its oxidation state.

What tye of chemical reactions involve both oxidation and reduction?

Which species is oxidised?

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which species is reduced?

Tags

NGSS.HS-PS1-2

What is needed for corrosion to take place?

• oxygen

• water

• acid

• sodium chloride

Tags

NGSS.HS-ESS2-5

Which of the following is NOT a way to prevent iron from corroding?

• paint

• oil

• engraving

• electroplating

Iron can be galvanised by spraying with a coating of zinc. What name is given to this protective coating?

• less reactive metal

• transition metal

• itchy metal

• sacrificial metal

Tags

NGSS.HS-ESS3-4