Chapter 11.3 - Chemical Changes

Which of the following is a way chemical changes can occur?

• A) Mixing

• B) Cooling

• C) Freezing

• D) Melting

Chemical changes can occur through (a)   .

• Heating

• Cooling

• Freezing

• Melting

Match the following ways chemical changes can occur with their examples:

• Combining vinegar and baking soda

• Using an electric current

• Photosynthesis

• Exposure to light

• Cooking an egg

• Heating

• Electrolysis of water

• Mixing

• Rusting of iron

• Interaction with oxygen

What happens to silver bromide when exposed to light?

• It turns into gold

• It decomposes into silver

• It remains unchanged

• It evaporates.

The coating on black and white photographic film contains ______.

Which of the following is used in electroplating?

• Plastic

• Metal

• Wood

• Glass