This preview shows pages 1–3. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: CHM 114A Exam 1 Version 1 Practice Exam 1. You are responsible for the information on this page. Please read it carefully. 2. Code your name and 10 digit affiliate identification number on the separate answer sheet. Use only a #2 pencil. 3. Do all calculations on the exam pages. Do not make any unnecessary marks on the answer sheet. 4. This exam consists of 25 multiple choice questions worth 4 points each and a periodic table. Make sure you have them all. 5. Choose the best answer to each of the questions and answer it on the computer-graded answer sheet. Read all responses before making a selection. 6. A periodic table is attached as the last page to this exam. 7. Answers will be posted online this afternoon. Potentially useful information: K = ºC + 273.15 Avogadro’s Number = 6.022 × 10 23 particles/mole Copyright 2006 by Pam Marks \ 1. When converting 0.02560 kilograms to milligrams, which of the following is the correct answer with the correct number of significant figures? A. 2.56×10 4 mg D. 2.56×10 –6 mg B. 2.560×10 4 mg E. 2.560×10 –6 mg C. 25.60 mg 2. What is a velocity of 45 m/s in units of km/hr? A. 1.6 × 10 2 km/hr B. 2.7 × 10 3 km/hr C. 1.6 × 10 5 km/hr D. 2.7 km/hr E. 0.045 km/hr 3. Which of the following is a physical change? A. Burning hydrogen gas B. Iron rusting to form iron(III) oxide C. Digesting food D. Evaporation of water E. None of the above 4. Which of these images is a representation of a pure element?...
View Full Document
This note was uploaded on 01/28/2010 for the course CHM 71476 taught by Professor Marks during the Spring '10 term at ASU.
- Spring '10