Sell your lecture notes and other study documents.
Test yourself and make money with homemade quiz questions.
Offer documents and quizzes together as a bundle and sell more.
Work as a tutor and help students with their studies.
View requests and send a proposal how you can help.
chamberlain collage of school of nursing chem 120 unit 4 midterm review 2020 study guide
Chamberlain collage of nursing chem 120 unit 4 midterm review 2020 study guide
Chem – Midterm Review <br/>1. The Scientific Method <br/> Hypothesis : a testable educated guess <br/> Experiments: how we test hypotheses <br/>o Variable: idea to be tested (only one) <br/>o <b>Control: something the variable is tested against; what your testing </b><br/><b>against </b><br/>o Experimental protocol: how do you do the test?<b> <br/></b>o Results: data generated comparing variable to controls. Includes statistics <br/>to show results are meaningful<b> </b><br/>o Conclusion: interpretation of results<b> </b><br/><b>2. </b>Density<b> </b><br/> <br/>Density (d), of a substance is the quantity of mass (m), per unit of volume (v) <br/> <b>D = m/d; m = d X V; V = m/d </b><br/><b>3. Metric; Measurement conversions (metric to metric only) </b><br/> <b>1 kilometer (km) = 1000 meters (m) <br/></b> <b>1 meter (m) = 100 centimeters (cm) <br/></b> <b>1 centimeter (cm) = 10 millimeters (mm) <br/></b> <b>1 millimeter (mm) = 1000 micrometers (um) <br/></b> <b>1 kilogram (kg) = 1000 grams (g) <br/></b> <b>1 gram (g) = 1000 milligrams (mg) <br/></b> <b>1 milligram (mg) = 1000 micrograms (ug) <br/></b> <b>1 liter (L) = 1000 milliliters (mL) <br/></b> <b>1 milliliter (mL) = 1000 microliters (uL) <br/></b> <b>1 milliliter (ml) = 1 cubic centimeter (cm3) </b><br/><b>4. Avagado’s Number, mole </b><br/> <b>A mole (mol) = 6.02 X 1023 </b><br/><b>5. Molar Mass </b><br/> <b>Equal to the atomic mass but expressed as unit grams per mole (g/mol) </b><br/><b>6. Atomic Number, atomic mass, isotopes, number of protons, electron, neutrons </b><br/> Atomic mass is expressed as amu ; is the weighted average <br/> Atomic Number is the number of protons in the nucleus of an atom of <br/>any element <br/> Isotopes have the same atomic number but different mass <br/>numbers(same number protons different number protons) <br/> Electrons are negatively charged particles in the nucleus <br/> Protons are positively charged particles in the nucleus <br/> Neutrons are neutral, have no electrical charge <br/> Atomic number = the number of protons <br/> Atomic number – (minus) atomic mass = neutrons <br/><b>7. Calculating Bonds </b><br/> <b>Subtract the smaller EN value from the larger EN value </b><br/>o <b>0 – 0.4 = nonpolar covalent <br/></b>o <b>> (greater than) 0.4 – 1.7 = polar covalent <br/></b>o <b>> ( greater than) 1.7 = ionic bond </b><br/> Ionic bonds is a bond that forms when electrons is being transferred from one <br/>form to another form. which results in positive and negative ions. <br/> Cations – are positively charged ions; think of the “t” in cat as a + <br/> Anion – are negatively charged ions <br/> Covalent bond – a bond formed when atoms share electrons <br/> Nonpolar covalent bonds – when the EN is very similar between 2 atoms <br/> Polar covalent – when the EN is different between 2 atoms <br/><b>8. Naming element from electron orbital configuration </b><br/> Hydrogen = 1s1 <br/> Helium = 1s2 <br/> Lithium = 1s22s1 <br/> Beryllium = 1s22s2 <br/> Boron = 1s22s22p1 <br/> Carbon = 1s22s22p2 <br/> Nitrogen = 1s22s22p3 <br/> Oxygen = 1s22s22p4 <br/> Fluorine = 1s22s22p5 <br/> Neon = 1s22s22p6 <br/> Sodium = 1s22s22p63s1 <br/> Magnesium = 1s22s22p63s2 <br/> Aluminum = 1s22s22p63s23p1 <br/> Silicon = 1s22s22p63s23p2 <br/> Phosphorus = 1s22s22p63s23p3 <br/> Sulfur = 1s22s22p63s23p4 <br/> Chlorine = 1s22s22p63s23p5 <br/> Argon = 1s22s22p63s23p6 <br/> Potassium = 1s22s22p63s23p64s1 <br/> Calcium = 1s22s22p63s23p64s2 <br/>
Download all 5 pages for € 9,99
52 documents uploaded
17 documents sold
Do you make summaries or do you have any completed assignments? Upload your documents to Knoowy and earn money.
Upon registration you agree to our privacy statement and terms and conditions .
At Knoowy you buy and sell the best studies documents directly from students. Upload at least one item, please help other students and get € 2.50 credit.