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CSU - CHEM 111 - chem 111 exam 1 - Study Guide

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CSU - CHEM 111 - chem 111 exam 1 - Study Guide

School: Colorado State University
Department: Chemistry
Course: General Chemistry I
Professor: Ruth Tucker
Term: Summer 2016
Tags: General Chemistry
Name: chem 111 exam 1
Description: chapter 1-3
Uploaded: 02/04/2018
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background image Test 1 study guide   Need to know:  1. What is a physical change?  a. The composition does not change   i. The phase or size changes   2. What is a chemical change?  a. Composition changes   i. Molecules, compounds change ( chemical reactions, burning or iron 
rusting) 
3. Converting kelvin to celsius  a. formula = T(in kelvin)=273.15 +T(in celsius)   i. T = temperature   4. What is accuracy   a. How close to the experimental measurements to real value   5. What is precision   a. How close repeated measurements are to each other   6. What is a chemical property ?  a. Must change composition   i. Reactivity   ii. Flammability   7. What is a physical property ?  a. Do not need to change composition   i. Color, mass , volume, density, boiling\melting point   8. Know the pieces of a periodic table box  a. Digit at the most top of the box is the atomic number  
b. Middle symbol is the element's chemical symbol 
c. Bottom number is the average atomic mass  
9. Significant digit rules   a. Multiplication and division-  i. Same number of sig figs as the measurement with the fewest sig figs  b. Addition and subtraction-   i. same decimal place as measurement with fewest decimal place (use the 
column method to line up the decimal places)  
c. When using both methods track sig figs throughout the problem but wait to the  very end to round the digits   10. Identifying the atomic mass and atomic number   a. Atomic number= the number of protons  
b. Atomic mass= the number at the bottom of the box 
11. Identifying elements compounds and pure substances through an image  

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School: Colorado State University
Department: Chemistry
Course: General Chemistry I
Professor: Ruth Tucker
Term: Summer 2016
Tags: General Chemistry
Name: chem 111 exam 1
Description: chapter 1-3
Uploaded: 02/04/2018
2 Pages 41 Views 32 Unlocks
  • Better Grades Guarantee
  • 24/7 Homework help
  • Notes, Study Guides, Flashcards + More!
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