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Do now: read chapter 1.6. UNITS MATTER!! Part 1 - number Part 2 - scale (unit) Examples: 20 grams 6.63 x 10 -34 seconds A Measurement is a quantitative.

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Presentation on theme: "Do now: read chapter 1.6. UNITS MATTER!! Part 1 - number Part 2 - scale (unit) Examples: 20 grams 6.63 x 10 -34 seconds A Measurement is a quantitative."— Presentation transcript:

1 Do now: read chapter 1.6

2 UNITS MATTER!!

3 Part 1 - number Part 2 - scale (unit) Examples: 20 grams 6.63 x seconds A Measurement is a quantitative observation consisting of TWO parts

4

5 5 T K = T C T C = T K –

6 Celsius scale  based on freezing and boiling points of water (0 o C – 100 o C) Kelvin scale  based on absolute zero (0 K) temperature at which particles are at lowest possible energy  NO negative numbers

7 K = o C o C = K – 273

8 T C = (T F – 32)X 5/9 T F = T C x 9/ You don’t need to memorize the conversion between T C and T F

9

10 1 T(base) = (base) = (base) 1 G(base) = (base) = 10 9 (base) 1 M(base) = (base) = 10 6 (base) 1 k(base) = (base) = 10 3 (base) 1 h(base) = 100 (base) = 10 2 (base) 1 da(base) = 10 1 (base) 1 (base) = 1 (base) 1 d(base) = (base) 1 c(base) = (base) 1 m (base) = (base) 1 µ(base) = (base) = (base) 1 n(base) = (base) = (base) 1 p(base) = (base) = (base) The Great Man King Henry Died By Drinking Chocolate Milk Monday Night Partying Tera- Giga- Mega- Kilo- Hecto- Deka- Base Deci- Centi- Milli- Micro- Nano- Pico-

11 mega-M10 6 deci-d10 -1 centi-c10 -2 milli-m10 -3 PrefixSymbolFactor micro-  nano-n10 -9 kilo-k10 3 BASE UNIT giga-G10 9 deka-da10 1 hecto-h10 2 tera-T10 12 Decimal move left Decimal move right pico-p10 -12

12 gmL Baseunit decicentimillidekahectokilo gmL Conversions between prefixes are merely a matter of moving a decimal point. The “base unit” means the you have a quantity (grams, meters, Liters, etc without a prefix.

13 gmL Baseunit decicentimillidekahectokilo Example #1: Convert 18 liters to milliliters 18 L liters = milliliters

14 gmL Baseunit decicentimillidekahectokilo Example #2: Convert 450 milligrams to grams mg 450 mg = g

15 gmL Baseunit decicentimillidekahectokilo Example #3: Convert 20 kilograms to milligrams 20 kg kg = mg

16 Volume= (length) 3 SI unit of V: m 3 Commonly used units of V: Liter(L)= dm 3 Milliliter(ml)=cm 3

17 a. cm to m b. m 3 to L c. ns to s d. kg to g

18 1) 20 cm = ______________ m 2) L = ______________ mL 3) 45  m = ______________ m

19 Handout Due next class.


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