Name: _____________________________
Chemistry Block: ________
Teacher Name: ______________________
Date: ______________________________
(be sure to attach your completed data table to these pages)
Experiment: What's the Matter
Chemical and Physical Properties and Changes
LAB WORKSHEET
Summary Questions:
1. Different kinds of matter are recognized by observing their: ____________________________________________________________
2. Five characteristics or properties used to identify substances are:
3. Two kinds of changes that matter may undergo are:
4. A change in which a substance loses the properties by which we identify it is called a ____________________________ change.
5. A change in which an element or compounds may change some of its physical properties but not its chemical properties is called a ________________________________ change.
6. Explain HOW you determined which sample was the most soluble.
7. Which sample(s) was the MOST soluble? (If more than one, list them.)
8. Which sample(s) was INSOLUBLE? (If more than one, list them.)
8. Which of the samples would be classified as a mixture?
9. What physical properties of matter were tested in this lab?
Conclusions:
1. A chemical change is one in which ___________________________________________
_______________________________________________________________________
2. Compounds are formed as the result of __________________________ changes.
3. A physical change is one in which _______________________________________________
___________________________________________________________________________
4. The formation of mixtures is a ______________________ change.
Related Questions:
1. Matter is defined as: ______________________________________________________________________________________
2. The three states or forms of matter are:
3. Mixing iron fillings and sulfur is a ______________________________ change because _________
__________________________________________________________________________
4. Heating a mixture of iron filings and sulfur produces a ___________________________ change because
__________________________________________________________________________
5. State whether the following are Physical (P) or chemical (C) changes:
a) Souring of milk _______ g) Burning of coal _______
b) Rusting of iron _______ h) Pulverizing sugar _______
c) Breaking glass _______ i) Boiling water ________
d) Tarnishing of silver _______ j) Melting ice ________
e) Dissolving salt in water ______ k) Melting paraffin _______
f) Magnetizing iron _______ l) Decaying of food _______
6. Does the application of heat to a substance always produce a chemical change? _______ Give an
example to support your answer ___________________________________________________________
7. Give an example of a chemical change produced by: (NOTE: BE SURE THAT YOUR ANSWERS MAKE SENSE!)
a) Light ________________________________________________
b) Electricity ___________________________________________
c) Heat ________________________________________________
8. Give an example of a chemical change which produces: (NOTE: BE SURE THAT YOUR ANSWERS MAKE SENSE!)
a) Light and Heat ________________________________________
b) Electricity ___________________________________________
c) Mechanical energy ____________________________________
9. How would you show that dissolving sugar in water is a physical change? EXPLAIN!
10. How would you show that heating a platinum wire in air is a physical change? EXPLAIN!