The Classification of Matter: Atoms, Elements, Molecules and Compounds - PowerPoint PPT Presentation

Loading...

PPT – The Classification of Matter: Atoms, Elements, Molecules and Compounds PowerPoint presentation | free to download - id: 203d35-ZDc1Z



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

The Classification of Matter: Atoms, Elements, Molecules and Compounds

Description:

Chemical Formulas show how many atoms of each element are in one molecule: 6. 23. 4 ... by a single chemical formula) A substance that contains. more than one ... – PowerPoint PPT presentation

Number of Views:1499
Avg rating:3.0/5.0
Slides: 30
Provided by: jtie1
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: The Classification of Matter: Atoms, Elements, Molecules and Compounds


1
The Classification of Matter Atoms, Elements,
Molecules and Compounds
2
Chemistry
  • The study of matter and its changes

Matter
Anything that has mass and volume
3
Atom
  • The basic unit of matter

Element
A type of atom
4
Each element has a name and symbol
5
Not all elements are equally common
6
Kinetic Molecular Theory
Matter is made of tiny particles called atoms,
which combine to form molecules.
7
Molecule
  • A group of atoms held together by sharing
    electrons (covalent bonds)

Compound
A substance containing more than one element.
8
Examples
  • Atom, Element, Molecule, Compound

9
Four different molecules
  • Which are compounds?

10
Some molecules are more complex
  • Some fat molecules

A protein molecule
?cholesterol
11
What are each of these? Atom, Element, Molecule,
or Compound
12
Allotropes
  • One of several different forms of an element

Oxygen has 3 allotropes
O Monatomic Oxygen (Single Oxygen Atom)
O2 Diatomic Oxygen Molecule
O3 Ozone Molecule
13
Allotropes of Carbon
Graphite
Diamond
  • All are pure carbon each has a different
    molecular or crystalline form.

Fullerenes
Carbon Nanotubes
14
Practice with Vocabulary
15
Molecules can be represented many ways
CH4 H2O
  • Chemical Formula

H
H
Structural Formula
O
Ball and Stick Model
Space Filling Model
16
Chemical Formula
  • All molecules can be represented by a

H2O
subscript
17
Chemical Formulas show how many atoms of each
element are in one molecule
0
2
1
O2
0
3
2
H2O
3
12
3
C3H8O
6
23
4
C6H12O4Cl
18
How many atoms of each element are present in one
molecule of
How many atoms of each element are present in one
molecule of
How many atoms of each element are present in one
molecule of
(NH4)2SO3
(NH4)2SO3
(NH4)2SO3
(NH4)2SO3
N. H S. O
2 8 1 3
2 8 1 3
2 8 1 3
2 8 1 3
19
The Classification of Matter Pure Substances and
Mixtures
20
Pure Substance
Pure Substance
Pure Substance
Pure Substance
  • An element or a compound
  • (Any substance
  • that can be described
  • by a single chemical formula)

An element or a compound (Any substance that
can be described by a single chemical formula)
An element or a compound (Any substance that
can be described by a single chemical formula)
An element or a compound (Any substance that
can be described by a single chemical formula)
Mixture
Mixture
Mixture
A substance that contains more than one pure
substance
A substance that contains more than one pure
substance
21
Pure Substance or Mixture?
22
Pure Substances
Pure Substances
Pure Substances
Pure Substances
Pure Substances
Pure Substances
Pure Substances
Pure Substances
  • Are made of only one compound or one element.
  • Can be represented by one chemical formula.

Examples
Salt
Salt
Salt
Salt
Salt
Salt
Copper
Copper
Copper
Copper
Water
Water
Water
H2O
NaCl
Cu
23
Mixture
Mixture
Mixture
Mixture
Anything that contains more than one pure
substance.
Anything that contains more than one pure
substance.
Anything that contains more than one pure
substance.
Anything that contains more than one pure
substance.
Examples
Examples
Examples
Juice, Granite, Salad Dressing, etc
Juice, Granite, Salad Dressing, etc
24
Homogenous Mixture
  • An even mixture particles are blended evenly
    throughout the mixture.
  • ( solutions)

Heterogeneous Mixture
An uneven mixture particles are unevenly
distributed.
25
A. Matter Flowchart
MATTER
yes
no
Can it be physically separated?
Homogeneous Mixture (solution)
Heterogeneous Mixture
Compound
Element
26
Pure Substance
  • A substance that contains
  • only one type of atom or molecule

Mixture
A substance that contains more than one pure
substance
27
Single Chemical Formula
  • All pure substances can be represented by a

H2O
If its really a pure substance, you should only
need to write ONE chemical formula to describe
its composition.
28
Distillation
29
Vacuum Filtration
Electrolysis
About PowerShow.com