1. What is Chemistry? CHAPTER 1 MRS. FARIA

2. Chapter Summary – Vocabulary Terms  Matter  Technology  Systematic approach  Chemistry  Mass  Weight  Model  Scientific method  Qualitative data  Quantitative data  Hypothesis  Experiment  Independent variable  Dependent variable  Control  Conclusion  Theory  Scientific law

3. Do Now: In your own words, what is chemistry?  Chemistry – study of matter and the changes that it undergoes.  Chemical – aka as a substance  Matter that has a definite and uniform composition

4. Team Building Activities  Like all science, chemistry very much revolves around the relationships with your peers and collaboration.  In the next two activities, you will need to learn to work together as a team to accomplish the task.

5. Activity 1  Materials:  3 or 4 pieces of string  1 rubber band  6 Styrofoam cups  Instructions:  Create a pyramid tower with the cups.  You CANNOT touch the cups with anything but the rubber band or the string.

6. Activity 2 – What is chemistry?  Each member will have one colored pencil.  In each group, members will take turns to draw a picture that realistically depicts chemistry.  Each member must have a turn and can only use their own color pencil.  No talking is allowed during the activity.

7. Do Now:  Start working on Study Guide 2.1

8. What is a chemical? (Demo)  Chemical – matter that has a definite and uniform composition.

9. What is chemistry? Chemistry is the study of substances in terms of Composition – what is it made of? Structure – How is it put together? Properties – What characteristics does it have? Reactions - How does it behave with other substances?

10. Chemistry and Matter BranchEmphasisExamples Organic Chemistry Most carbon containing chemicalsPharmaceuticals, plastics Inorganic Chemistry Matter that does not contain carbon Minerals, metals and nonmetals, semiconductors Physical Chemistry Behavior and changes of matter and the related energy changes Reaction rates, reaction mechanisms Analytical Chemistry Components and composition of substances Food nutrients, quality control Biochemistry Matter and processes of living organisms Metabolism, fermentation Environmental Chemistry Matter and the environmentPollution, biochemical cycles Industrial Chemistry Chemical processes in industryPaints, coatings Polymer Chemistry Polymers and plasticsTextiles, coatings, plastics Theoretical Chemistry Chemical interactionsMany areas of emphasis Thermochemistry Heat involved in chemical processes Heat of reaction

11. Chemistry & Matter  Matter – anything that has a mass (made up of atoms) and takes up space (volume)  Mass vs. weight  Mass – measurement that reflects the amount of matter  Measured in grams, kilograms.  Weight – a measurement not only of the amount of matter but also the effect of Earth’s gravitational pull on that matter.  Measured in Newtons.

12. Model  Visual, verbal, or mathematical explanation of experimental data.

13. Do Now:  Write down the steps of the scientific method.

14. Scientific Method  Problem/Question  Gather information  Hypothesis –  Experiment –  Independent variable  Dependent variable  Control  Collect Data  Qualitative data –  Quantitative data -  Analyze data  Model -  Conclusions  Scientific theory  Scientific Law

15. Theory vs. Scientific Law  Theory – hypothesis supported by many experiments  Explanation  Scientific law – summary of accepted facts of nature  Observation

16. Chapter Summary – Main Ideas  Chemistry is the study of everything around us.  Branches of chemistry involve the study of different kinds of matter.  Scientists use the scientific method to systematically pose and test solutions to questions and assess the results of the tests.  Some scientific advantages result in the development of technology that can improve our lives and the world around us.

17. Review Questions  Which of the following releases matter? A. Engaging a car exhaust system B. Picking up iron filings with a magnet C. Turbines spinning in a power plant D. Turning on an electric hot plate

18. Review Questions The general term for a systematic approach used in scientific study is ________. A. the scientific method C. quantitative analysis B. qualitative analysis D. the scientific controversy

19. Review Questions When an explanation has been supported by many experiments. The explanation is a ___________. A. hypothesis B. theory C. law D. model