Chemical Reactions and Rusting Quiz

Liam noticed that his bicycle chain was starting to rust. What is the process called when a material reacts with oxygen and forms a new substance, like rust on iron?

• Combustion

• Oxidation

• Evaporation

• Condensation

Which of the following is a sign that a chemical change has occurred?

• Melting of ice

• Dissolving sugar in water

• Formation of a gas

• Boiling water

What happens to materials when they are burned in the presence of oxygen?

• They dissolve

• They freeze

• They undergo combustion

• They condense

Which of these materials is most likely to rust when exposed to air and moisture?

• Plastic

• Glass

• Aluminum

• Iron

In the absence of oxygen, what happens to materials that normally undergo combustion?

• They remain unchanged

• They rust

• They dissolve

• They evaporate

What kind of change is represented by the burning of wood?

• Physical change

• Chemical change

• Phase change

• Mixture change

How does oxygen affect the rate of rusting in iron?

• It speeds up the rusting process

• It slows down the rusting process

• It prevents rusting entirely

• It has no effect on rusting

What is a common product of combustion in the presence of oxygen?

• Salt

• Water vapor

• Ice

• Oxygen

When a metal rusts, what type of change occurs?

• Chemical change

• Physical change

• Nuclear change

• Thermal change

What is one way to prevent rusting of iron objects?

• Expose them to water

• Keep them in a moist environment

• Apply a protective coating

• Increase the temperature