Chemical Reactions Quiz

What is a chemical reaction?

• A process that leads to the transformation of one set of chemical substances to another.

• A process that leads to the separation of chemical substances.

• A process that leads to the formation of new elements.

• A process that leads to the destruction of chemical substances.

Which of the following is an example of a chemical reaction?

• Baking soda and vinegar reacting to produce carbon dioxide gas

• Blowing up a balloon

• Cutting a piece of paper in half

• Mixing salt and sugar together

Which of the following is NOT a sign of a chemical reaction?

• Maintaining the same physical state

• Release of heat or light

• Formation of a precipitate

• Change in color

Which of the following is an example of a chemical reaction?

• Burning of wood

• Mixing of salt and water

• Cutting a piece of paper

• Turning on a light bulb

Which of the following is an example of a chemical reaction?

• Cutting a piece of paper

• Turning on a light bulb

• Mixing of salt and water

• Mixing glue, contact solution, and baking soda

What was a sign that we got a new substance when we mixed an alka-seltzer and water?

• Bubbles were formed in the water

• The water changed color

• There water heated up

• The water froze

What sign was there that we got a new substance when we mixed glue, baking soda, and contact solution?

• The subtance got hot

• The substance had different properties from any of the other substances

• The substance mixed evenly

• The substance changed to a completely different color.

What is NOT true of when we mixed water and sugar.

• The water stayed the same color.

• The water got hotter.

• The water stayed at the same temperature.

• The water turned into a solid

Which mixture resulted in a new substance

• Water and Sugar

• Water and flour

• Water and baking soda

• Water and alka-seltzer

Which mixture did not turn into a new substance.

• Water and sugar

• Water and alka-seltzer

• Vinegar and baking soda

• Glue, contact solution, and baking soda