Do you know the change?

Which of the following is evidence of a physical change?

• New substance

• Light produced

• Shape Change

• Gas released.

A teacher is demonstrating physical and chemical changes to her class. Which action should they use to demonstrate a chemical change?

• Cutting a piece of paper with scissors.

• Folding a piece of paper into an airplane.

• Ripping a piece of paper with their hands.

• Burning a piece of paper with a match.

A physical change is

• a change where the characteristics do not change the substance

• a change where the characteristics do change the substance

• a change where the chemistry changes

• A new substance is created and the state changes

Chewing food to break it down into smaller particles represents a _________ change, but the changing of starch into sugars by enzymes in the digestive system represents a ___________change.

• Chemical then Physical

• Physical then Chemical

• Both Physical

• Both Chemical

Properties that describe how a substance looks, feels, or its state of matter, etc. are __________________.

• Chemical properties

• Physical properties

Properties that describe how a substance reacts with other substances are called?

• Chemical properties

• Physical properties

What is the definition of chemical change?

• any change that results in the formation of one (or more) new chemical substance(s).

• changing of only the appearance of the object

• matter cannot be created or destroyed, only change form

• changes affecting the form of a chemical substance, but not its chemical composition.

Which of the following IS a clue that a chemical change has occurred?

• State of matter change

• Size Change

• Change in temperature

• Shape change

What kind of properties can only be observed when a substance changes into a different substance?

• physical properties

• chemical properties

• liquid properties

• real properties

What kind of change is cutting paper?

• Physical change

• chemical change