Physical and Chemical Changes

Burning wood is a

• chemical change

• physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

NGSS.MS-PS1-4

Which of the following is NOT an example of a physical change?

• crumpling paper

• sharpening a pencil

• clothes shrinking

• sour milk

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

• cutting a piece of paper

• folding a piece of paper

• tearing a piece of paper

• burning a piece of paper

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is an example of a chemical change that happens inside your body?

• Food being broken down by acids in your stomach.

• Food being broken down into small pieces by your teeth.

• Food being moved to your stomach.

• Water being absorbed inside your large intestine.

Tags

NGSS.MS-PS1-2

Select ALL of the characteristics of a physical change

• changes in appearance only

• a new substance is not created

• changes in the ph level

• burning and fire

• chemical bonds are not created or broken

Which of the following are examples of chemical properties (more than one)

• combusts

• reacts with water and oxygen

• ductile

• is weighed in grams

• has a sour taste

Tags

NGSS.MS-PS1-2

A heterogeneous mixture is

• a mixture in which individual substances are not evenly mixed

• a mixture in which multiple substances are mixed

• a mixture in which the individual substances are evenly mixed

A homogeneous mixture is

• a mixture in which individual substances are not evenly mixed

• a mixture in which multiple substances are mixed

• a mixture in which the individual substances are evenly mixed

The part labeled "b" is the

• element symbol

• atomic number

• element name

• atomic weight

Which Law states that Matter cannot be created or destroyed during a Chemical Change/Reaction?

• Conservation of Energy
• Conservation of Matter (Mass)
• Conservation of Momentum
• Conservation of Thermodynamics

Tags

NGSS.MS-PS1-5