ACC CHEM 1311 - Exam 1 Review (8 pages)

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Exam 1 Review



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Exam 1 Review

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Pages:
8
School:
Austin Community College District
Course:
Chem 1311 - General Chemistry I - Lecture

Unformatted text preview:

1 Gen Chem I Exam 1 Review Chapters 1 2 Multiple Choice Identify the choice that best completes the statement or answers the question 1 All of the following are properties of antimony Which one is not a physical property a It is a solid at room temperature b It has both yellow and gray forms allotropes in the solid state c It burns in an atmosphere of chlorine d It is one of the few substances that expands upon freezing e The gray form melts at 631 C 2 The following properties describe zinc Which one s is are chemical properties I II III IV V It is bluish white metal It corrodes upon prolonged contact with moist air Its density is 7 14 g cm3 It melts at 419 C It conducts electricity a IV and V b IV c V d II IV and V e II 3 Identify which of the following properties of methane would be observed only with a change in composition a The melting point is 182 5 C d The boiling point is 161 5 C b The density is 6 67 10 4 g cm3 e It dissolves slightly in water c Carbon dioxide forms when it burns 4 Which of these physical changes would require the liberation of energy a condensation of steam to form liquid water b melting of ice c boiling of water d all of the above e none of the above 5 Which answer lists all the substances below that are compounds and not any elements or mixtures I II III IV V ethyl alcohol neon sulfur water crude oil a I II and III b I IV and V c IV and V d II III and V e I and IV 2 6 A sample of matter that can be decomposed into three different elements a must be a solution b must be a compound c must be a heterogeneous mixture d must be a homogeneous mixture e could be any of the preceding four answers 7 Below is a list of common prefixes used in the SI and metric systems Included with each is an abbreviation and meaning Which set contains an error a megaM 106 d microm 10 6 1 b decid 10 e kilok 103 2 c centic 10 8 Which of the following is equivalent to 10 cm a 1 m d 1000 m b 0 1 dm e 1 mm c 100 mm 9 The answer to the following calculation rounded to



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