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What is Chemistry? (and why should I care?) by Daniel R. Barnes, init 8/15/2018

What is Chemistry? (and why should I care?) by Daniel R. Barnes, init 8/15/2018.

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What is Chemistry? (and why should I care?) by Daniel R. Barnes, init 8/15/2018

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  1. What is Chemistry? (and why should I care?) by Daniel R. Barnes, init 8/15/2018 WARNING: as with almost all of my PowerPoint presentations, this one contains lots of images downloaded from the world wide web without the express permission of the owners. This presentation is intended to be viewed only by Mr. Barnes’ students in a public high school setting. Do not download, copy, store, or distribute this presentation.

  2. SWBAT . . . . . . explain the benefits of taking chemistry.

  3. . . .

  4. TPS: What is discipline? 2 min. GO! (Teacher, check for writing.)

  5. Barnes' Grading System 50% Multiple Choice 20% Constructed Answers 10% Work 10% Labs 10% Class Participation 80% Assessment / 20% Work DO IT NOW: Make a pie graph based on this grading system.

  6. MATERIALS: REQUIRED: * Notebook paper * Pen * Pencil * Graph paper * Chromebook (honors chemistry students) RECOMMENDED: * Binder * Water * Chromebook (normal chemistry students)

  7. SWBAT . . . . . . define what chemistry is and why it matters.

  8. What is chemistry? “Chemistry is the study of the composition of matter and the changes that matter undergoes.” page 7

  9. MATTER: anything that has volume and mass. Volume = takes up space Mass = (1) it takes effort to change its motion (to “accelerate” it) (2) feels the pull of gravity (has “weight”) Here on Earth, matter occurs in three common “states”: solids, liquids, and gases. Elsewhere in the universe: plasma, neutron matter, & ?

  10. https://www.youtube.com/watch?v=pYefhPALCpU

  11. MATTER: anything that has volume and mass. Volume = takes up space Mass = (1) it takes effort to change its motion (to “accelerate” it) (2) feels the pull of gravity (has “weight”) Here on Earth, matter occurs in three common “states”: solids, liquids, and gases. Elsewhere in the universe: plasma, neutron matter, & ?

  12. COMPOSITION: what something is made of So what is this stuff? What is steel made of? What are iron and carbon made of?

  13. What usually happens to steel over time?  Rust consists of hydrated iron(III) oxides Fe2O3·nH2O and iron(III) oxide-hydroxide (FeO(OH), Fe(OH)3).

  14. What’s going on here?

  15. DO NOT DO THIS AT HOME! (or anywhere else) Click inside the red box to see it again.

  16. See the black balls? Those are . . . CARBON ATOMS. The study of chemicals that have carbon in them is called ORGANIC CHEMISTRY

  17. ORGANIC molecules, like caffeine here, can be big and complex

  18. “Organic” chemistry was so named because, originally, chemists thought that only living things (“organisms”) could make carbon compounds. estrogen chlorophyll

  19. PHOTOSYNTHESIS Photosynthesis is a chemical reaction that happens in a living thing, so it’s part of . . . BIOCHEMISTRY

  20. TPS: What is chemistry and why is it important? Chemistry is the study of the composition of matter (what matter is made of) and the changes that matter goes through (changes of state, chemical changes). Answers to “why is it important?” will vary, but . . . Everything you can touch is made of some kind of matter, and all things change over time, so chemistry helps us understand just about everything in life. Chemistry gives us the power to make medicine, fertilizer, preservatives, paint, metals, cosmetics, clothing, explosives, fuels, food, insecticides, pollution control devices, smoke detectors, . . .

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