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Unit 1: Introduction to matter Lecture 3: elements vs. compounds

Unit 1: Introduction to matter Lecture 3: elements vs. compounds. What are pure substances made of ?.

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Unit 1: Introduction to matter Lecture 3: elements vs. compounds

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  1. Unit 1: Introduction to matterLecture 3: elements vs. compounds What are pure substances made of?

  2. Catalyst: Directions: Separate the pile of cards into compounds and elements based on the particle diagram and then write the chemical formulas in the table provided below and answer the questions below. • Based on the particle diagram, how could you determine which cards were elements and which cards were compounds? • How are the chemical formulas for elements different from those from compounds? • If you had to come up with a general rule for how to tell whether a substance was an element or compound just from the chemical formula, what would it be?

  3. HW: Pre-reading • Expect an open-note reading quiz tomorrow 

  4. Close-out quote of the day • “I think science has enjoyed an extraordinary success because it has such a limited and narrow realm in which to focus its efforts.  Namely, the physical universe.” • ~Ken Jenkins—Electrical engineer, Ph.d. Penn State.

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