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Table of Contents DateLecture/ Activity/ Lab Page 10/27 Writing Chemical Formulas /28 Ionic Bonding /29 ChemicalEquations and the Conservation of Mass /30 Balancing Act /02 Balancing Chemical Equations Activity /03 See Saw Poster /4 Law of Conservation of Mass Lab /5 Balancing Equations Review /6 Physical and Chemical Changes Notes 97-98
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Starter:
9897 Evidence of Chemical Reactions11/06/15
Practice:Notes over Chemical Evidences
11/06/15 Evidence of Chemical Reactions
ApplicationEvidence of Chemical Change ppt activity
Connection:Physical vs. Chemical Changes Practice
Exit:Write 3-4 sentences explaining what you have learned about chemical changes today.
Identify the parts of a chemical equation
EQ: How can comparing and contrasting help me to understand how matter physically or chemically changes?
November 6,2015
AGENDA8.5 F.
I will be able to recognize whether a chemical equation containing
coefficients is balanced or not and how that relates to the law of
conservation of mass by reading, and writing while completing an
activity.
1. Starter2. Notes3. Activity4. Ws5. Exit
Table of ContentsDate Lecture/ Activity/ Lab Page10/27 Writing Chemical Formulas 81-8210/28 Ionic Bonding 83-8410/29 ChemicalEquations and the Conservation of Mass 85-8610/30 Balancing Act 87-8811/02 Balancing Chemical Equations Activity 89-9011/03 See Saw Poster 91-9211/4 Law of Conservation of Mass Lab 93-9411/5 Balancing Equations Review 95-9611/6 Physical and Chemical Changes Notes 97-98
Starter: Label the parts of the equation
CoefficientChemical Formula
Element yieldssubscript
Physical vs. Chemical ChangesNotes
Matter undergoes changes all of the time.
There are two types of changes:
chemical
physical &
Physical changes:
Physical changes occur when the appearance of a substance changes…
…but chemical
ly the substance is the same.
The individual molecules
do not change.
Examples of physical
changes are, melting, freezing,
or changing size or shape.
A physical change
also occurs when
substances are…
mixed and something dissolves…like making salt water or Kool-aid.
The water, salt and sugar still keep their original properties and the substances can be separated again.
Chemical Changes
A chemical change occurs
when the atoms making
up matter rearrange..
to form a new substance with new
properties.
This usually occurs during
a chemical reaction.
Evidence of a chemical
change:
Production of a gas.
bubblesfizzing
foamingsmokeodor
color change*not all color changes are
chemical!
A different color appears
*not all color changes are
chemical!
Formation of a
precipitate
cloudiness
foggy
solid at bottom of container
Change in heat or
light energy
Sparksexplosionglowing
temperature
increases or
decreases
These are only
clues…
…a chemical change has not actually taken place unless matter has
changed into a new substance.
Some common
examples of chemical changes
include…
Rusting…
Tarnishing…
Burning…
Cooking…
Digesting…
If you have the chemical
equation, you can tell if a chemical
change has taken place
by…
Looking to see if the
products in the equation
are….
different from the
reactants.
Evidence of Chemical Change
TEKS 6.5D identify the formation of a new substance by using the evidence of a possible chemical change such as production of a gas, change in temperature, production of a precipitate, or color change.
TEKS 8.5E investigate how evidence of chemical reactions indicate that new substances with different properties are formed.
acid rain on a statue
digesting a hamburger
photosynthesis
a nail rusting
tarnish on pennies
Starter:
9897 Evidence of Chemical Reactions11/06/15
Practice:Notes over Chemical Evidences
11/06/15 Evidence of Chemical Reactions
ApplicationEvidence of Chemical Change ppt activity
Connection:Physical vs. Chemical Changes Practice
Exit:Write 3-4 sentences explaining what you have learned about chemical changes today.
Identify the parts of a chemical equation
EQ: How can comparing and contrasting help me to understand how matter physically or chemically changes?
