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ADVANCED CHEMISTRY - REVIEW QUESTIONS Name ___________________ Section ____
TEST#2, SEMESTER #1, FALL, 2013
Chapter 2 – Matter and Change
• REMEMBER to use your ch.2 homework questions and the yellow answer key to prepare for
your test as well as the questions below.
• ALSO – the DISTILLATION lab will be included on the test.
ANSWER ON SEPARATE PAPER so you can practice showing ALL your work where necessary.
1. State the difference between extensive and extensive properties. Give three examples
of each.
2. Refer to Table 2.1 (p. 40):
(a). Which of the three gases, neon, oxygen and chlorine, which one has the lowest
boiling point and which has the highest boiling point?
(b). Which of the substances listed are liquids at 62˚C?
(c). If a mixture of gold and copper where heated to a temperature of 2,600˚C, which of
the two metals would eventually remain alone in the heated vessel? Explain.
3. Draw sketches to show how particles are arranged in solids, liquids and gases. Suggest
how these sketches may account for solids having definite shape. Explain.
4. What is the difference between a gas and a vapor?
5. What is the difference between a physical change and a chemical change?
6. What is the difference between a heterogeneous and a homogeneous mixture?
7. How does a solution relate to the classification of mixtures?
8. What is a phase?
9. Why are physical properties important when separating mixtures?
10. Sand and salt can be separated in a series of steps. Draw fully labeled diagrams of the
separate steps to illustrate how sand and salt can be separated.
11. Ethanol can be extracted from Guinness using a round-bottomed flask. Draw a fully
labeled diagram of the apparatus to show how this can be completed.
12. If Guinness contains approx. 6% ethanol by volume, calculate how much ethanol can be
theoretically extracted from 34.8 mL of Guinness?
13. A student extracted all of the ethanol from a 64.4 mL sample of red-wine that was
13.8% ethanol by volume. 14.2% of the ethanol extracted evaporated into the
atmosphere. What volume of ethanol did the student end up with?
14. Elements and compounds are BOTH substances. Explain.
15. What is the difference between a compounds and a mixture? Explain.
16. What are the final products that form when sugar is heated? (page 48/49)
17. What form of energy is used to break water molecules into the constituent elements
hydrogen and oxygen? (Page 49)
18. Draw a flow chart to classify matter.
19. List FIVE elements that are represented by Latin symbols.
20. In terms of a chemical reaction, what is a ‘reactant’ and what is a ‘product’?
21. What is a precipitate? Explain in full.
22. Give three examples of both physical and chemical changes.
23. In the law of conservation of mass, it is true to say that mass is always conserved. What
does this mean? Explain.
24. When 24.0 grams of magnesium burns in air, it chemically combines with 32.0 grams of
oxygen gas.
(a). Assuming magnesium oxide is the only product that forms and none of it is lost,
what mass of the final product will remain?
(b). If 14 .6 grams of magnesium oxide form, what mass of magnesium and oxygen are
used to make this amount of magnesium oxide?