10/09/13 starter: paste starter here practice: 1.compound: 2.element: 10/09/13 57 58 molecules,...
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10/09/13Starter:
Paste Starter Here
Practice:1. Compound:
2. Element:
10/09/1357 58
Molecules, Compounds and Elements Molecules, Compounds and Elements
Application
Notes: Glue here when done
Connection:Ws: Elements and Compounds turn in when done
Exit :
Name some compounds that you know you use in your life
October 9, 2013AGENDA
8.5 D, 6.5C I will be able to recognize the difference between an element and a compound and how they are used in chemical formulas by writing,
speaking, and reading during notes and an activity.
1 Starter2. Notes3. Activity4. Exit
Date Lecture/ Activity/ Lab Page9/25 Metal, Nonmetals, and Metalloids 41-429/26 Where’s Al? 43-449/27 Element Wanted Poster 45-469/30 Bohr Model Challenge 47-4810/1 Periodic Table Notes/Puzzles 49-5010/2 Periodic Table Chart 51-5210/3 Test Review 53-5410/8 Test Corrections 55-5610/9 Molecules, Compounds, and Elements 57-58
Table of Contents
Application:Atoms, Elements,
Molecules, Compounds
Atoms
• An atom is the smallest particle of an element that still has the properties of that element.
All matter is made of atoms, even you.
Atoms• Atoms are structures too
small for us to see, even with aid of a microscope.
• Because we can’t see atoms, we use models to help us study and understand them
Atom model
• We often use circles to represent atoms and put them together to represent molecules.
• Some use a bar or a line to represent the bonds between the atoms and some don’t.
N N
N N
Elements
• An element is a substance made of only one kind of atom.
• Elements can be arranged to form new substances.
N
N
NO
OO
ON
Molecule• A molecule is formed
when 2 or more atoms bond together.
• If a molecule is made up of only 1 kind of atom we call it an element.
• If the molecule is made up of 2 or more kinds of atoms we call it a compound.
Compound
Element
Molecules
• Atoms of elements often bond together to form molecules.
• Atoms of oxygen bond together to form oxygen molecules or O2.
OO
OO
OO
O O
Element Molecules• Hydrogen molecules are formed when 2
hydrogen atoms bond together.H
HH H
Sulfur molecules are formed when 8 sulfur atoms bond together.
This molecule is made of only 1 kind of atom so it is considered an element.
S S
S SS
SS
S
Compounds• A compound is two or more elements joined
together by a chemical bond. • Water is an example of a compound. • Each molecules is made up of 1 oxygen atom
and 2 hydrogen atoms.
Sugar Compound
• The simple sugar glucose is a compound made up of 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms.
OO
OO
OO
CC
CC
CC
Glucose • Glucose is a product of photosynthesis. Atoms
are rearranged to produce oxygen and glucose.
+ +O O
O O
O O
O O
O O
O O
+
Compound Properties• The properties of a compound are often very
different from the elements they are made up of.
• For example, at room temperature hydrogen and oxygen are both gases but water is a liquid.
+
2 Hydrogen + Oxygen “yields” Water (hydrogen oxide)
Molecules: Elements vs. Compounds
• Look at the molecule .• Decide what elements make-up it up.• Distinguish between Element and compound.
Formula of Molecule
# of atoms in molecule and elements
Classification: Element or Compound
H2O 2- hydrogen and oxygen compound
NO 1-Nitrogen , 1-Oxygen Compound
FI2 1-Fluorine , 2-Iodine Compound
O3 3-Oxygen Element
10/09/13Starter:
Paste Starter Here
Practice:1. Compound:
2. Element:
10/09/1357 58
Molecules, Compounds and Elements Molecules, Compounds and Elements
Application
Notes: Glue here when done
Connection:Ws: Elements and Compounds turn in when done
Exit :
Name some compounds that you know you use in your life