Physical and Chemical Changes

Which of the following is NOT true about the chemical property of water?

• A.  Does not burn
• B.  Reacts with metals
• C.  Made of hydrogen and oxygen atoms in a 3 to 1 ratio
• D.  All of these are true.

Which is an example of a physical change?

• A. Metal rusting
• B. Silver tarnishing
• C. Water boiling
• D. Paper Burning

Chemical changes result in new substances, but physical changes do not. Which process is an example of a chemical change?

• A.  baking a cake
• B.  heating  a cup of tea
• C.  chopping a tree
• D.  drying clothes in the dryer

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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

• A. Chemical Change
• B. Physical Change
• C. Freezing
• D. Boiling

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Marco tears a piece of notebook paper into smaller pieces, as shown below.
Tearing paper into pieces is an example of what kind of change?  

• A.  a change in mass
• B.  a physical change
• C. a chemical change
• D.  a change in energy

Which process is an example of a physical change?

• A.  Burning
• B. Flattening
• C. Rusting
• D. Decomposing

Tags

NGSS.MS-PS1-4

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

• A.  Change in color 
• B.  Change in shape 
• C.  Change in energy 
• D.  Change in odor 

Tags

NGSS.MS-PS1-2

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

• A. Chemical Change
• B. Physical Change
• C.  Both a physical and chemical change 
• D.  A.  Neither a physical or chemical change

Tags

NGSS.MS-PS1-4

Which of the following is an example of physical change?

• A. Baking a birthday cake for your mother.
• B. A glass cup falls from the counter and shatters on the ground. 
• C.  Lighting a piece of paper on fire and the paper burns up and leaves ashes. 
• D.  Mixing baking soda and vinegar together, and this causes bubbles and foam.  

There are several differences between chemical and physical changes. Which process is an example of a chemical change?

• A.  steam rising from a boiling pot of soup
• B.  a metal railing rusting in damp weather
• C.  alcohol evaporating from a cotton swab
• D.  a piece of wood shrinking as it dries out

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5