Matter and Metrics

Unit 1; Notes #2

What is

Chemistry?

The study of the composition of substances and the changes they undergo.

OrganicPhysicalAnalytic

BiochemistryInorganic

Organic Chemistry

The study of living system molecules:

• carbohydrates• lipids• nucleic acids• proteins

Physical and Analytical Chem• Highly focused on experimental data• Upper level college chemistry

BiochemistryBiochemistry•Where Where

chemistry chemistry meets biologymeets biology

•The chemistry The chemistry of living of living systemssystems

Inorganic Chemistry

• Study of elements and compounds

• States of matter• Reactions• This IS high school

chemistry!

Pure versus Applied Science• Pure science is neither

“good” nor “bad”, knowledge for fun of it

• Applied science = technology and engineering

Matter

• Anything that has volume and mass.

Volume: takes up space

Weight is a measure of gravity!

Mass: measure of amount of matter, does not change with location

0

20

40

60

80

100

120

140

Moon Earth

Weight (lbs) Mass (kg)

States of matter- Solids

• Have definite

shape• Have definite

volume

States of matter-Liquids

• Fixed volume• Pours or flows• Takes shape of

container• In Swedish:

Kvicksilver

States of matter-Gases

• Takes the shape of container

• Volume and density change with temperature

Periodic Table

• The elements can exist alone or bonded.• Elements can be an atom or molecule.• Compounds are molecules that are bonded elements.

Atom or Molecule?

• H2

• Mg• F2

• S8

• Cu

• Molecule: two or more atoms chemically bonded

• Atom: smallest package of matter, single symbol

Element or Compound?

• O2

• NaCl• CO2

• Pt• H2O• He

• Elements are the purest form of matter, only one type of atom.

• Compounds are two or more types of atoms chemically bonded to form a pure substance.

Which of the above are atoms? Molecules?

Metric System

• SI = uniform system based on units of 10

• Base units = defined unit on an object or event in physical world

• Quantity vs. Number

• 10,000

Base unit Quantity

Kilogram Mass

Liter Volume

Meter Distance

Metric Conversions

Kilo k

Hecto h

Deca daMeter mGram gLiter L

Deci d

Centi c

Milli m

Metric Equivalents

• mm • daL• kg• dm• cc

• L

• Millimeter• Decaliter• Kilogram• decimeter• cubic centimeter cm3= mL• liter = dm3

Copyright 2005 All Rights Reserved. Mrs. Brunet

Microsoft Office Online graphics

http://office.microsoft.com/clipart/default.aspx?lc=en-us

Web Elements graphics www.webelements.com

Chemical Elements.com periodic tablehttp://www.chemicalelements.com/