9/9/14 CHEMISTRY MRS. TURGEON

“Learn from yesterday, live for today, hope for tomorrow. The important thing is not to stop questioning.” –Albert Einstein

OBJECTIVES SWBAT:1.Complete 2 scientific notation conversions independently2.Diagram the procedure for a lab

DO NOW:Name two important functions of the “Quality Control” member of a POGIL group

9/9/14 CHEMISTRY MRS. TURGEON

DUE DATE SUMMARY:

1.Learning Roles & Safety Worksheet- Today

2. Foldable/Flashcards 11-20 Wednesday, 9/10/14

3. Elements Quiz (1-20), Thursday, 9/11/14

1.What you did to ripped jeans

2.What a cloud does

3.What you do to flowers in the spring

4. What you do in a play

Use the pun to help you identify the element.Give the element’s name and symbol.

1.What you did to ripped jeans

2. What a cloud does

3.What you do to flowers in the spring

4. What you do in a play

The answers are …

Sodium - Na

Uranium - U

Platinum - Pt

Actinium - Ac

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106,000 aluminum cans, the number 106,000 aluminum cans, the number used in the US every 30 seconds.used in the US every 30 seconds.

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106,000 aluminum cans, the number 106,000 aluminum cans, the number used in the US every 30 seconds.used in the US every 30 seconds.

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Scientific NotationScientific Notation# from 1 to 9.999 x 10exponent

800 = 8 x 10 x 10 = 8 x 102

2531 = 2.531 x 10 x 10 x 10

= 2.531 x 103

0.0014 = 1.4 ÷ 10 ÷ 10 ÷ 10

= 1.4 x 10-3

Change to standard form.

1.87 x 10–5 =

3.7 x 108 =

7.88 x 101 =

2.164 x 10–2 =

370,000,000

0.0000187

78.8

0.02164

Change to scientific notation.

12,340 = 0.369 = 0.008 =

1,000,000,000 =

1.234 x 104

3.69 x 10–1

8 x 10–3

1 x 109

Prefixes in the SI SystemPrefixes in the SI System

Power of 10 for Prefix Symbol Meaning Scientific Notation_________________________________________________________

mega- M 1,000,000 106

kilo- k 1,000 103

deci- d 0.1 10-1

centi- c 0.01 10-2

milli- m 0.001 10-3

micro- 0.000001 10-6

nano- n 0.000000001 10-9

If a set of calculations gave you the following numbers and you want to express your answer correctly for our class then…….

2.57995035 becomes 2.58

34.204221 becomes 34.20

How do I express my answer?How do I express my answer?

Always round to the hundredth spotAlways round to the hundredth spot