2. Applying a Scientific Method Questions Chemistry Tries to Answer What is this matter that I have? Properties of matter Known vs. unknown How much do I have? Various concentrations What chemicals are present in what amounts? How can I change it? Know what you have and change it into someone more useful.
3. How much can I get and how fast? Know effects and speed of chemical reaction The more you know, the closer you come to solving problems The legacy of matter Same particles found now have existed for hundreds of years Understand matter and its changes
4. Regularities among Facts Obtaining facts Make careful observations Inference Interpretation of observation Classification Categorize information Notice things that are common to large groups Using a scientific method Hypothesis: temporary explanation Theory: explanation accounts for past events
5. Developing Theories Models – representations that convey information about real items Part 1 Review Questions 1 – 5 Page 8
6. Using Mathematical Knowledge Quantity Property that can be measured and described by a number and a unit that names the standard use Mathematics Relationships among numbers
7. Math as a Tool Numbers Refer to anything Only like quantities can be added or subtracted Units Name the quantity measured
8. SI Units in Measurement Same numerical base as the decimal system Every unit is 10x more than the last SI base units:
10. Tools for Analysis Read Section 1.5 – 1.7 Take notes as you read Complete Practice Problems 15 & 16 Make sure to show your work! Turn both in at the end of the hour…..
11. Exploring Matter Properties of Matter Physical Changes Substance changes form Solid, liquid, gas Changes that are easy reversed Chemical Changes Changes are not reversible Produce a new kind of matter
12. Solids, Liquids, Gases Solid Particles are arranged in orderly manner Particles are packed closely together Particles do not move from place to place Maintains specific shape Volume is almost entirely of particles themselves Can not be compressed any further
13. Liquids Substances that flow Particles are free to slide past one another and continually change positions Particles are in constant motion Conform to the shape of their containers Compressing does not significantly change volume
14. Gases Particles in constant motion Motion of particles is random Particles are not neatly arranged Particles move throughout container Without container, disperse freely Part 4 Review Questions 25 - 30
