1. Unit 1 Test Topics by Day Day 1 – Safety –Look over safety contract –Are all chemicals dangerous? Day 2 – What is Chemistry/Scientific Method –What is Chemistry/Matter/Mass? –What are the branches of chemistry? –What is the Scientific Method? –What are the parts of an experiment? –Quantitative verses qualitative

2. Day 3 –Theories verses Laws –SI Units (what are the base units, remember one is tricky) –Dimensional Analysis Remember micro (μ), milli (m), centi (c), deci (d), deca (da), kilo(k), and mega (M) –Derived Units, especially density (D=m/V) Day 4 –Accuracy and Precision What’s what? Percent Error (|actual-experimental|/actual x 100)

3. Day 5 –Sig Figs What makes them a sig fig (4 rules) How many are in a number Adding/Subtracting and Multiplying/Dividing How to read equipment properly Day 6 –Equipment What is each piece of equipment called? What is a use for the equipment?

4. Day 7 and Day 8 Classifying matter –Atom, pure substance, elements, molecules, compounds, mixtures –Homogeneous verses heterogeneous –Separating mixtures –States of Matter Gasses, liquids, solids, plasma Phase diagrams (you will have to interpret and label, not draw) Changing states names (know that picture well) –Chemical verses physical

5. Also look over Vocabulary Reality Checks

6. Test Format (70 Questions, all of them have choices) Safety3Significant Figures7 Matter / Branches of Chemistry3Chemical Equipment5 Scientific Method / Data Type4Reading Chemical Equipment4 Dimensional Analysis / SI Units7Phase Diagram4 Density2States of Matter2 Precision/ Accuracy4Mixtures5 % Error2Seperating Mixtures2 Scientific Notation2Physical verse chemical3 59 Multiple Choice (breakdown is below) 5 physical or chemical 6 phase diagram

7. Since it seemed like people struggled most with significant figures, here are a few practice problems How many significant figures are in the following numbers: a) 450500e) 900000009 b) 0.0070220f) 50000000. c) 50000000g) 9809200 d) 0.008102h) 0.00000010000 a. 4 b. 5 c. 1 d. 4 e. 9 f. 8 g. 5 h. 5

8. Solve the following problems to the correct number of significant figures a) 6.78 x 10 3  2.2 x 10 4 b) 549 + 2.890 + 10.9 c) 0.000090040 x 5200 d) 89.000 – 8.90 e) 99.09 + 8.1 – 0.099 f) 56.000 x 1000 g) What is the density of a 150 mL liquid that has a mass of 58.99 g to the correct number of significant figures? a) 0.31 b) 563 c) 0.47 d) 80.10 e) 107.1 f) 60000 or 6 x 10 4 g) 0.39 g/mL