1. W 9/3 or Th 9/4 Homework due: – Page 4 in packet (periodic table rounding) Elements Quiz #2 – 2 minutes after the bell—study now! – 6 minutes to take

2. Language of Chemistry (LoC) List 2 Qualitative an observation of qualities; adjectives Mono- Greek prefix for “one” Quantitative an observation of quantity; a measurement Di Greek prefix for “two” rxn abbreviation for “chemical reaction” Product a substance present after a chemical reaction EE button on calculator used in scientific notation; means “x10^” Reactant a substance present before a chemical reaction Combustible adjective that means “can catch fire easily” Corrosive adjective that means “reacts with” or “damages” things like metals or body tissues. Ex. Acids and bases

3. Flow chart card sort In your packet, use the flow chart on p 9 to figure out which final destination box (at the bottom) each illustration belongs in. Draw it in! Suspension Solution

4. A quick review of Scientific Notation General FormatCalculator use Positive exponentsNegative Exponents Examples:

5. General Format A x 10 B 6.02 x 10 23 First digit in A cannot be 0 It must be between 1 and 9 coefficient exponent

6. Positive Exponent Very LARGE number Example: 7.0 x 10 9 7.0 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 Means 7,000,000,000 (9 zeros before decimal)

7. Negative Exponent Very SMALL number Example: 2.5 x 10 -11 2.5 x.1 x.1 x.1 x.1 x.1 x.1 x.1 x.1 x.1 x.1 x.1 Means 0.000000000025 (10 zeros after decimal)

8. Special Cases 6.0 x 10 1 = 60 An exponent to the 1 st power is like multiplying the number by 10.

9. Special Cases 6.0 x 10 0 = 6.0 An exponent to the zero power is like multiplying the number by 1, because 10 0 = 1.

10. Calculator Stuff 3.0 x 10 6 = 3,000,000 (6 zeros) Graphing Calculator: use 2 nd “,” (above 7) What you push: 3.0, 2 nd, comma, 6 What you see: 3.0 E 6 What it means: 3,000,000

11. Standard to Scientific Notation Convert to Sci Not: 34,520,054 Becomes 3.4520054 x 10 7 Round to 2 decimal places 3.45 x 10 7

12. Standard to Scientific Notation Convert to Sci Not: 0.0000112 Becomes 1.12 x 10 -5 Rounded to 1 decimal place 1.1 x 10 -5

13. Scientific Notation to Standard Example: 4.8735 x 10 -11 Becomes 0.00000000004873 Assignment: page 5 #1-10

14. Your first test! This is prep for your first test which will be on Tuesday 9/9 or Wednesday 9/10 Karma Questions: 1, 2, 12, 13

15. Exit Ticket On lined side of notecard: – Name – Yes, I’m willing/No, I’m not willing to sit at lab tables. On blank side: – Use the shapes below to represent elements – Draw out a mixture of two different compounds – Turn it in on your way out

16. Homework Study LoC list 2 for quiz next class Karma Questions #1, 2, 12, 13 Page 5 #1-10