First exam study guide
First exam study guide CHEM 110
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This 3 page Study Guide was uploaded by Shrey Vyas on Friday February 5, 2016. The Study Guide belongs to CHEM 110 at Penn State Brandywine taught by in Spring 2016. Since its upload, it has received 92 views. For similar materials see Chemical Principles I in Chemistry at Penn State Brandywine.
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Date Created: 02/05/16
Chem test 1 Study Guide • Things to know Lesson 1 1. Definition of matter and it’s three states- anything that has mass and takes up space. Solid, Liquid, and Gas. 2. Atoms- building blocks of matter 3. Element- made of the same kind of atom 4. Know the elements 5. Compound- made up of two or more different kinds of elements in a constant composition 6. Physical Property can be observed without changing the substance 7. Chemical can only happen when the substance changes 8. Intensive are independent of the amount of the substance present 9. Extensive depend on the amount of substance present 10. Physical change does not change the composition of the compound 11. Chemical changes result in a new substance 12. T= square root of 2d/g 13. The two major types of pure substances are elements and compounds 14. 16oz=1 lb. 15. 2000lb=1 ton 16. 12in= 1 ft 17. 3ft= 1 yd 18. 1760yds= 1 mile 19. 16floz= 1 pint 20. 2pints= 1 qt 21. 4qt= 1 gallon 22. 2.54cm= I in 23. d=m/v 24. Know significant figures- non-zeroes are significant. Leading zeroes are not. Zeroes after decimal are, and zeroes between numbers are. 25. Accuracy- values are almost same as the true value 26. Precision means values are all close to each other but not necessarily the true value • Things to know from Lesson 2 1. Atomic mass is to the top left of the element (A) 2. Atomic number is bottom right (Z) 3. Atomic charge is top right 4. Numbers of atoms of that element bottom right 5. Isotopes- The same element with different atomic mass 6. Know where the elements are in the periodic table 7. Metals, Nonmetals and Metalloids (semi-metals) 8. Know the charges on the elements with a fixed harge 9. 1A Alkali metals = +1 H, Li, Na, K, Rb, Cs, Fr 10. 2A Alkaline earth metals = +2 Be, Mg, Ca, Sr, Ba 11. 3A= -5 B 12. 4A= -4 C, Si 13. 5A= -3 N, P 14. 6A Chalcogens = -2 O, S, Se, 15. 7A Halogens= -1 F, Cl, Br, I 16. 8A Noble gases = 0 He, Ne, Ar, kr, Xe, Rn 17. Metals with fixed charges most of the time. Al= +3 18. O-15 would have 7 neutrons because it is an isotope of O-16. Meaning it will have one less neutron that O-16 which is 8-1=7. 19. Ionic= metal and non metal 20. Covalent= Non metal and non metal 21. Find the charges and balance them to name the ionic compounds 22. Positive charges are called cations and negative charges are called anions 23. Practice writing formulas for ionic compounds and covalent compounds 24. Know all the polyatomic ions 25. Know the rules for acids. If it’s one less oxygen then add ous instead of ic. If it is two less add hypo and chlorous. If it is one more add per. 26. Know the names and molecular formula for the first ten hydrocarbons. 27. Methane, ethane, propane, butane, pentane, hexane, heptane, octane, nonane, and decane. 28. Be familiar with the line notation of these hydrocarbons 29. Spend a lot of time naming all of these compounds. Especially organic compounds because they get really tricky. 30. Know the difference between cis2 butene and trans-2-butene
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