Unit 1 Assignment Packet
Name:_______________________
Period:______
A1 – Chapter 2.1 & 2.2 Reading Guide (Goals 1 – 4)
SECTION 2.1 PROPERTIES of MATTER (pages 39 – 43)
1. What is matter?
2. The ______________________ of an object is the amount of matter the object contains.
3. What is an extensive property?
4. What is an intensive property?
5. Matter that has a uniform and definite composition is called a___________________________.
6. How many kinds of matter does a pure substance contain?______________________
7. Is the following sentence true or false? All samples of a substance have different physical properties.
______________________
8. A physical property is a quality or condition of a substance that can be______________________ or
______________________ without changing the substance’s composition.
9. Circle the letter of the term that is NOT a physical property.
a. odor
b. density
c. boiling point
d. corrosion
10. Is the following sentence true or false? A chemist can help identify a substance by its physical properties.
______________________
11. Circle the letter of the term that is NOT a physical state of matter.
a. water
b. gas
c. liquid
d. solid
12. Match each arrangement of the particles in matter with a physical state.
Physical State
Arrangement
______ gas
a. packed tightly together
______ liquid
b. close, but not rigidly packed
______ solid
c. spaced far apart
13. Is the following sentence true or false? The words gas and vapor can be used interchangeably.
______________________
14. The term gas is limited to those substances that exist in the gaseous state at ordinary _____________________ and
_____________________.
15. What is vapor?
16. A physical change alters a given material without changing its chemical__________________________.
17. What are some words that describe physical change?
18. What do boiling, melting and freezing have in common?
SECTION 2.2 MIXTURES (pages 44 – 47)
19. Is the following sentence true or false? Most samples of matter are mixtures.______________________
20. What is a mixture?
21. Is the following sentence true or false? A heterogeneous mixture is one that has a completely uniform composition.
______________________
22. What is another name for a homogeneous mixture?______________________
23. Circle the letter of the term that describes a part of a system with uniform composition and properties.
a. Solution
b. mixture
c. state
d. phase
24. How many phases exist in these types of mixtures?
a. Homogeneous
b. Heterogeneous
Match each type of solution with an example of it.
25. ______ solid-solid a. sugar water
26. ______ solid-liquid b. carbon mixed with iron to form steel
27. ______ gas-liquid
c. soda water
28. ______ gas-gas
d. air
29. Is the following sentence true or false? It is always easy to separate the components in mixtures.
______________________
A2 – Chapter 2.3 & 2.4 Reading Guide (Goals 5 – 8)
SECTION 2.3 ELEMENTS AND COMPOUNDS (pages 42 –47)
1. What are the two groups into which substances can be classified? _________________and____________________
2. Is the following sentence true or false? Elements can be separated easily into simpler substances.
______________________
3. Compounds are substances that can be separated into simpler substances only by ______________________
means.
4. Is the following sentence true or false? The properties of compounds are different from those of their component
elements. ______________________
5. Is the following sentence true or false? The elements that make-up a substance is always present in the same
proportions. ______________________
6. What is used to represent each element?____________________________________
7. What are chemical symbols used for?_______________________________________
8. The subscript numbers in chemical formulas represent the proportions of the various elements in the
__________________________________.
9. Use the periodic table to answer the following questions.
a. Pb is the symbol for what element? ______________________
b. What is the symbol for gold? ______________________
c. Stibium is the Latin name for which element? ______________________
SECTION 2.4 CHEMICAL REACTIONS (pages 48 –50)
10. What happens in a chemical reaction?
11. What is a chemical property?
12. Is the following sentence true or false? Chemical properties are observed only when a substance undergoes a
chemical change. ______________________
13. In chemical reactions, the starting substances are called______________________ and the substances formed are
called ______________________.
14. Circle the letter of the term that best completes the sentence. A chemical change _______ results in a change in
chemical composition of the substances involved.
a. Sometimes
b. rarely
c. always
d. never
15. What are some words that describe chemical change?
16. Which representation of a chemical reaction is correct?
products  reactants
OR
reactants  products
17. During a chemical reaction, the mass of products is always equal to the mass of ______________________.
18. The law of conservation of mass states that in any physical change or chemical reaction, mass is neither
______________________ nor______________________.
A3 – Chemical & Physical Properties, Elements, Compounds & Mixtures Worksheet (Goals 1– 8)
1. In your own words, differentiate between the following terms. Use your own unique examples to illustrate your point:
-Chemical Change and a Physical Change
-Chemical Property and Physical Property
2. Indicate whether the following are physical or chemical changes.
a. Melting candle wax
b.
Tearing Mg ribbon
c. Adding HCl to Mg
d. Tearing Paper
e. Grinding CuSO4
f.
Burning Paper
g. Heating CuSO4
h. Dissolving NaCl
i.
Mixing NaCl and Sand
3. Describe the difference between elements, compounds, and mixtures. Give an example of an element, which is then
in a compound, which is also in a mixture.
4. Explain why a compound can or can’t be broken down to smaller components (i.e. elements or smaller compounds)
by physical means? Use an example to support your position.
5. Describe the difference between a homogenous mixture and a heterogeneous mixture. Provide an example of each
and explain why they homo or hetero.
6. Discuss why physical properties are better to use to separate mixtures than chemical properties. Use an example to
illustrate your point.