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Chapter 2 Matter Study Guide Key

Chapter 2 Matter Study Guide
Answer the following as completely as possible. Use your notebook assignments to help you prepare
for your second test. If you cannot find the information in your notebook, than refer to your textbook.
1. Describe a heterogeneous mixture and give an example. A mixture where you can see different parts
example M&Ms
2. Describe a homogeneous mixture and give an example. A mixture where the pieces appear to look
similar throughout because substances are so evenly mixed. An example is Salt water
3. What makes up elements? A pure substance that cannot be broken down into any other substance
4. What makes up compounds? a substance made of two or more elements
5. What is a mixture? Made up of more than one kind of matter Can be separated physically by:
Evaporation, Filtering, Sorting, Electric Charge
6. Label the pictures as compound, mixture or element. Each circle represents an atom. If two atoms
are touching then they are bonded together. #1 Element, #2 mixture, #3 compound
7. What is a Physical Property? Properties that do not change the chemical nature of matter
8. What is a Chemical Property? Properties that describe the way a substance may change or react to
form another substance
9. Give Examples of:
Physical Properties
Chemical Properties
Malleability- Conductivity- HardnessMelting Point/Freezing Point- Boiling PointDensity- Volume-Length-
10. Give examples of phase changes. Melting, boiling, evaporation, condensation,
11. What is Matter? Matter is anything that has mass and volume, It occupies space, composed of atoms
12. How can matter be broken down into smaller groups? A chart is fine for this one.
13. Identify each picture as either a chemical or a physical change:
chemical, physical, chemical, physical
14. Write down some information and examples about the most missed topics from the last test: Define
Independent and Dependent Variables, List the rules for Significant Figures, Show how to Density
All non-zero numbers are significant ( 6789, 4 significant figures)
Zeros appearing between non-zero numbers are significant ( 6007, 4 significant figures)
Zeros that appear in front of non-zero numbers are not significant (0.00034, 2 significant
figures because you can change it into 3.4 x 10-4)
Zeros at the end of a number and to the right of a decimal are significant ( .80, 2 significant
figures, you would have written .8 if there is only 1 significant figure)
Zeros at the end of a number but to the left of a decimal are not significant ( 3000, 1
significant figure)