Physical & Chemical Changes

Which of the following is an example of physical change? 

• Mixing baking soda and vinegar together and this causes bubbles and foam.

• A glass cup falls from the counter and shatters on the ground. 

• Lighting a piece of paper on fire and the paper burns up and leaves ashes. 

• Baking a birthday cake for your mother. 

Which of the following is an example of chemical change? 

• Filling up a balloon with hot air. 

• Taking a glass of water and freezing it by placing it in the freezer. 

• A plant collecting sunlight and turning it into food. 

• Your dog ripping up your homework. 

Which change can be easily reversed? 

• Chemical change

• Physical change

• Both a chemical and physical change

• Neither a physical or chemical change

When a new substance is formed with different properties than the original substance, it is called a…..

• Chemical change

• Physical change

• Freezing

• Boiling

If the chemical properties of a substance remain unchanged and the appearance or shape of a substance changes, it is called a….

• Chemical change

• Physical change

• Both a chemical and physical change

• Neither a physical or chemical change

Which is an example of a physical change? 

• Metal rusting

• Silver tarnishing

• Water boiling

• Paper burning

What characteristic best describes what happens during a physical change? 

• Structure changes

• Structure stays the same

• Form stays the same

• Mass is lost

Which is an example of chemical change? 

• Water freezes

• Wood is cut

• Bread is baked

• Wire is bent

Which is not a clue that could indicate a chemical change?

• Change in color

• Change in shape

• Change in energy

• Change in odor

What property stays the same during physical and chemical changes? 

• Density

• Shape

• Mass

• Arrangement of particles