This document provides notes on chemical and physical changes for students. It defines key terms like chemical change, physical change, chemical formula, and chemical equation. It explains that a chemical change results in a new substance, while a physical change only alters the substance's size, shape, or phase. It also notes that for a chemical change there must be evidence like a color change, gas formation, temperature change, or precipitate formation. The goal is for students to understand the differences between chemical and physical changes and be able to investigate examples of each.

1. Notes

2.  The student will:
 Distinguish the difference between a
chemical and a physical change
 Investigate and understand physical
changes in matter
 Investigate and understand chemical
changes in matter
 Investigate and understand chemical
formulas and the types of bonds found in
simple compounds

3. The Law of Conservation of
Mass/Matter
Chemical Change
Physical Change
Chemical Formula
Chemical Equation
Reactant
Product

4. States that
mass/matter is
neither lost or
gained during a
reaction, though
it may change in
substance, form,
phase or state

5.  When a substance
changes its size or
shape or phase/state of
matter but still retains
the properties of the
original substance
 i.e.:
▪ Paper being torn
into little pieces

6.  When a new
substance is created
through the
combination of
chemicals or energy
 i.e.:
▪ Paper burning and
turning into ash
(carbon)

7. The way a
substance or
compound is
expressed
symbolically
▪CO2 is Carbon
Dioxide
▪H2O is Water
▪C6H12O6 is
Glucose

8. A math-like
equation that
shows how
chemicals are
combined
C + O2
CO2
▪ means
“Yields”

9. The chemicals
combined in a
chemical
equation
Located on the
left side of the
equation
Carbon (C) + 2
Oxygen atoms
(O2)
▪C + O2 CO2

10. The final
outcome of a
chemical reaction
Located on the
right side of the
equation, (right of
the yields symbol
)
C + O2  CO2
▪Carbon (C )+ 2
Oxygen atoms (O2)
= Carbon Dioxide
(CO2)

11. Activity Chemical list Clues to Change

12. Notes (Cont,)

13. Simply mixing materials does not
always produce a chemical change.
There must be evidence of a
chemical change
▪Measurable
▪Observable

14. Same substance only in a different:
 Shape
 Size
 Phase/State of Matter
▪ Solid
▪ Liquid
▪ Gas

15. A New substance must
be formed!!!!!!!

16. One or more of these
occurs

17. CCoolloorr CChhaannggee

18. Gas FormationGas Formation
(Bubbles/Fizzing)(Bubbles/Fizzing)

19. Temperature ChangeTemperature Change
(Increase/Decrease)(Increase/Decrease)

20. Precipitate FormationPrecipitate Formation
▪An insoluble compound forms at the
bottom