Is one anomaly enough to disprove a hypothesis? If not, how many are? Why is it important that scientists use all of their results and not just some of them? What should we do if the evidence neither supports nor contradicts the hypothesis?

Which statement is FALSE? O A pure substance can be varied by changing the proportion of pure substances making it up A mixture can be separated into 2 or more substances by physical or mechanical means A pure substance had properties that are constant, no matter where you find it A pure substance has constant chemical composition A mixture's composition can be varied by changing the proportion of pure substances making it up

into the book. Write a concise definition of each, using examples as appropriate.

Which will be an appropriate hypothesis for the experiment?

01. [02.01 The Atomic Theory of Matter / 02.02 The Discovery of Atomic Structure] [Answer: (a) Get the answers by yourself. (b) The charge on an electron = 9.60 × 10-9 wa, (c) A: 4e, B: 5e, C: 3e, D: 9e, (d) 6.00 x 107 wa/C.] Suppose a scientist repeats the Millikan oil-drop experiment but reports the charges on the drops using an unusual (and imaginary) unit called the warmomb (wa). The scientist obtains the following data for four of the drops: Droplet Calculated Charge (wa) A 3.84 x 10-8 (a) If all the droplets were the same size, which would fall most slowly through the apparatus? B 4.80 × 10-8 (b) From these data, what is the best choice for the charge of the electron in warmombs? C 2.88 x 10-8 D 8.64 × 10-8 (c) Based on your answer to part (b), how many electrons are there on each of the droplets? (d) What is the conversion factor between warmombs and coulombs?

The world population is estimated to be 7.4 x 109. Nauru is the smallest island nation and comprises 1.5 x 10-4% of the world population. If the percentage of left-handed people is approximately 12%, estimate the number of left-handers on the island of Nauru.

The following prompt will be used to answer the first six questions. An experiment was performed to separate the components of a binary mixture composed of sucrose (sugar) and sand. The following data was collected in lab during the experiment. Mass of original binary mixture: 20.100 ± 0.001 g Mass of initial filter paper: 21.206 ± 0.001 g Mass of filter paper and isolated sand: 25.226 ± 0.001 g 9b Given the data and information in the prompt, what is the calculated absolute error on the percent of sugar in the mixture? Enter the absolute error you calculated in the box below. You do not need to include the % symbol with your answer.