6.5D: Formation of a New Substance
Matter and Energy
Using the Web Surfing Science websites your teacher has assigned to you, complete
the following online treasure hunt.
Part I: Chemical and Physical Changes
1.  Explain the difference between chemical and physical changes.
_________________________________________________________________________
_________________________________________________________________________
During the formation of a new substance, what are three observations that are signs of the
change?
_________________________________________________________________________
_________________________________________________________________________
_________________________________________________________________________
2.  TRUE or FALSE. Dissolving a solid is a chemical change.
___________________________________
3.  TRUE or FALSE. Hydrogen gas can be produced from a chemical reaction.
____________________
Part II: Chemical Changes
1.  TRUE or FALSE. Matter is destroyed during the formation of a new substance.
________________
1
6.5D: Formation of a New Substance
Matter and Energy
Part II: Chemical Changes, continued
2.  Describe what happens to particles during a chemical change.
_________________________________________________________________________
_________________________________________________________________________
3.  Explain how the composition of a substance is affected during a chemical change.
_________________________________________________________________________
_________________________________________________________________________
4.  Provide an example of the formation of a new substance.
_________________________________________________________________________
_________________________________________________________________________
Part III: What Are Chemical Properties and Changes?
1.  Circle the correct response. The potential for hydrogen to ignite is a chemical
A. change B. property
2.  TRUE or FALSE. During a chemical change all substances involved change in composition.
_______
3.  Explain the change that occurs when iron rusts.
_________________________________________________________________________
_________________________________________________________________________
4.  TRUE or FALSE. Alka Seltzer dissolving in water is a change in substance.
____________________
2