Chemical Change Experiment

What is a chemical change?

• When one substance is transformed into a different substance

• When one substance is changed, but structurally the same before and after the change.

• A property of a substance that is measurable

• A material's property that undergoes a reaction

What causes more sugar crystals to dissolve in the solution?

• The temperature of the water in the solution

• The amount of sugar

• The time left in the solution

• They will stay the same no matter what

What is an example of a chemical change?

• Burning wood

• cutting a sheet of paper

• crushing a can

• melting ice

What is an example of a physical change?

• Burning wood

• rusting iron

• Cutting the grass

• rotting fruit

What type of change occurs at the molecular level?

• chemical change

• physical change

• temperature change

• all of the above

Which type of change is reversible?

• chemical change

• physical change

(a)   changes do not change the composition of the substance.

Which of the following are examples of physical properties?

• Weight

• chemical makeup

• amount of atoms

Which of the following could indicate that a chemical change took place?

• change of color

• change in temperature

• formation of gases

• all of the answers

using the following forces: motion and pressure, which type of change can occur?

• physical change

• chemical change

• neither