101 practice E1

101 practice E1 - Chemistry 101 Exam 1 Practice Test...

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Chemistry 101 Exam 1 Practice Test Covering Chapters 1-3 Use correct significant figures and units for each answer. Show all your work. 1. The following six questions are related: a. The name of 24 Mg is: i. Magnesium-24 ii. 24-Magnesium iii. Manganese-24 iv. 24-Manganese b. In the above atom there are _______ protons, _______ neutrons, and _______ electrons. c. Mg belongs to a family of (circle one) elements / compounds. The name of this family is the: i. Noble gas ii. Alkaline earth metals iii. Alkali metals iv. Halogens 2. Explain the set up of Thomson’s experiments with cathode rays and the importance of the results. 3. Sodium silicofluoride has a number of properties. Write a “C” next to chemical properties and a “P” next to physical properties: _____ It is white _____ It is soluble (the ions will dissociate in water) _____ It reacts with Si and therefore can be used to etch glass _____ It melts at 500° Celsius
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4. The name for 59 Co is __________________________________. There are _______ protons and _______ neutrons in its nucleus.
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101 practice E1 - Chemistry 101 Exam 1 Practice Test...

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