Vocabulary- Week 2

From Chemistry Book…• dimensional Analysis• base Unit• derived Unit• Kelvin• Celsius

From Agenda….• animadversion• credence• feckless• cavort• evince

Quiz Review• Lab Safety

• Lab Equipment– Mass of water in beaker– What equipment is used for specifically

• Mass vs Weight

• Scientific Method– Qualitative vs Quantitative– Variables

Quiz on Tuesday!

Metric System-Chapter 2

• Base Units

– Defined unit of measurements that is based on an object or event in the physical world

Time Seconds

s

Length Meter

m

Mass Kilogram

kg

Temperature Kelvin

K

Amount of substance

Mole

mol

• Derived unit

–Units that are defined as a combination of base units

Volume-

(length x width x height)

Liter

L

Density Grams per milliliter

g/mL

Metric System• Prefixes

giga G 1 000 000 000 109

mega M 1 000 000 106

kilo k 1000 103

deci d 1/10 10-1

centi c 1/100 10-2

milli m 1/1000 10-3

micro μ 1/1 000 000 10-6

nano n 1/1 000 000 000 10-9

pico p 1/1 000 000 000 000 10-12

Things you should know & memorize

• 1 kilo = 1000 units

• 1 unit = 100 centi

• 1 unit = 1000 milli

• 1 centi= 10 milli

• 1 mL = 1 cm3

A phrase to help you remember…

King

Henry

Died

Un-expectantly

Drinking

Chocolate

Milk

K H D U D C M

Kilo

Hecta

Deca

Unit (L, m

, s, g)

Deci

Centi

Milli

Metric Conversions II

1 m = _____cm 1 g = _____ cg 1 L = _____ cL

1 cm =_____mm 1 cg = _____mg 1 cL = _____mL

1 km = _____m 1 kg = _____g 1 kL = _____L

1 m = _____mm 1 g = _____mg 1 L = _____mL

1 g = _____ mL 1 cm3 = _____ g 1 mL = _____ g

You should also know how to solve problems using dimensional analysis

• Dimensional Analysis

– Method of problem solving that focuses on the units & uses conversion factors• The same thing as multiplying by a factor of

one

How to use dimensional analysis

1.2 mg g

Convert

1.2 mg g 6.3 cm mm

5.12 m cm 12 L g

6.11 mL L 1km mm

1.03 kg cg 0.003 g kg

428 cm3 mL 12 L g

4 Liters/hour mL/min

• Kilogram

• Meter

• gram

• Milliliter

• Millimeter

• Liter

• Kilometer

• Centimeter

• milligram

A phrase to help you remember…

King

Henry

Died

Un-expectantly

drinking

Chocolate

Milk

K H D U d C M

Kilo

Hecta

Deca

Unit (L, m

, s, g)

Deci

Centi

Milli

King Henry Died Un-expectantly drinking Chocolate Milk

King Henry Died Un-expectantly drinking Chocolate Milk

King Henry Died Un-expectantly drinking Chocolate Milk

King Henry Died Un-expectantly drinking Chocolate Milk

King Henry Died Un-expectantly drinking Chocolate Milk

King Henry Died Un-expectantly drinking Chocolate Milk

King Henry Died Un-expectantly drinking Chocolate Milk

King Henry Died Un-expectantly drinking Chocolate Milk

King Henry Died Un-expectantly drinking Chocolate Milk

King Henry Died Un-expectantly drinking Chocolate Milk

King Henry Died Un-expectantly drinking Chocolate Milk

King Henry Died Un-expectantly drinking Chocolate Milk

King Henry Died Un-expectantly drinking Chocolate Milk

King Henry Died Un-expectantly drinking Chocolate Milk

King Henry Died Un-expectantly drinking Chocolate Milk

King Henry Died Un-expectantly drinking Chocolate Milk

King Henry Died Un-expectantly drinking Chocolate Milk

King Henry Died Un-expectantly drinking Chocolate Milk

King Henry Died Un-expectantly drinking Chocolate Milk

King Henry Died Un-expectantly drinking Chocolate Milk

King Henry Died Un-expectantly drinking Chocolate Milk