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 FV Chem 101 Worksheet #1Conversions:Memorize this table (trust me it’ll help you during exams)Convert the following values and use appropriate significant figures:0.30 mm= ______ m5.00g= ______ kg 5.00mm=______cm1.00 yd = ______cm (3 ft = 1 yard, exactly then check how many ft in cm)10.0 cm = ________in16.9 fl. oz= _______L (0.0338 fl oz.= 1 mL)15.0 lb = _______kg (use 2.20 lb = 1 kg)There should be a conversion table in your book, try to familiarize yourself as best as you can. Significant Figures:What is the multiplication rule for significant figures?Division rule?Addition/Subtraction rule?What things qualify as significant figures?What does not qualify as a significant figure?Practice with sig figs: 1. Indicate how many significant figures there are in each of the following measured values. 246.32: _______107.854:______ 100.3:____ 0.678:_____ 1.008:________0.00340:______ 14.600:____0.0001:______ 400000:_______ 350.670:______ 1.0000:______320001:______ 2. Calculate the answers to the appropriate number of significant figures. a) 23.7 x 3.8 = b) 45.76 x 0.25 = c) 81.04 x 0.010 = d) 6.47 x 64.5 = e) 43.678 x 64.1 = f) 1.678 / 0.42 = g) 28.367 / 3.74 = h) 4278 / 1.006Scientific Method:What is the definition of a scientific law?What does the scientific method begin with and how do we test this?What is the difference between a theory and a hypothesis?States of matter:What is the law of conservation of matter? Draw what each of the following atoms would look like in a container:Solid:Liquid:Gas:Mixtures:What is the definition of a mixture?A homogenous mixture is defined as:A heterogeneous mixture is defined as:For the following distinguish if it is:A. a mixture B. homogenous mixture C. heterogeneous mixture D. pure substanceHint: ask yourself if it is a mixture or a pure substance first, then determine if the pure substance is an element or a compound and if the mixture is heterogeneous or homogeneousPure water:Oil and water:Table salt:SeawaterGasoline:Salad dressing:Apple juice:Iron metal:History and Laws: Describe the contributions of Antione Levosier: What is the law of definite and multiple proportions? What is the atomic theory, and name the 4 postulates:A.B.C.D. In 2 chemical reactions, 3.0 grams of oxygen combine with 5.0 grams of carbon to form one compound, and 8.0 grams of oxygen combine with 5.0 grams of carbon to form another compound. What law can this be explained by and why? (hint you just wrote its definition)Coulomb’s Law Definition:Fill in the blank:Charges are acted upon by electric and _________ fields. Two positive charges will _______ each other.A positive and negative charge will _________ each other. The two types of radioactive particles are alpha and ______.Alpha particles are _______ chargedBeta particles are _________ chargedAre alpha particles smaller or bigger than beta particles?Important Discoveries:What did JJ Thompson experiment on and discover?What charge does a cathode ray have?What is the charge to mass ratio for the electron?Redraw the plum-pudding model:What did Robet Millikan do (experiment)?What did Millikan and Thompson’s discoveries lead to?The nucleus was discovered by _______________. ................
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