1. Mya Lewis, Joeli Boyd, & Danielle Graham
7.1 & 7.2 Chemical Reactions
Mya Lewis, Joeli Boyd, & Danielle Graham

2. Topics Chemical Reactions (Concept Overview Chart) Digestive System
Hydrogen Peroxide
Symbols Chart
Writing chemical equations
Skeleton Equations
Writing word equations
Everyday Chemical Reactions
Try It Yourself
Topics

3. Chemical Reactions

4. The digestive system breaks down the food that enters your stomach to create glucose sugar for your body to create energy off of. Hydrochloric Acid decomposes the food into glucose sugar.
The digestive system is a common place where a chemical reaction that’s takes place within the human body. The chemical reaction is when the hydrochloric acid, breaks down food and turns it into glucose sugar.
Digestive System

5. Symbols Chart

6. Everyone should what hydrogen Peroxide is used for
Everyone should what hydrogen Peroxide is used for. You know the brown bottle in your closet or medicine cabinet. Hydrogen peroxide reactions with bacteria in an infected cut or open wound. Reactions with the oxygen hitting to open wound or cut.
Hydrogen Peroxide

7. Writing chemical equations
Example: Hydrogen + Oxygen
Reactant + Reactant = Product
H2O
H2+ O H2O
Writing chemical equations

8. To write a skeleton equation, you must write the correct formulas of the reactants and products to the right. ALSO USE THE RIGHT SYMBOL!
Skeleton Equations

9. Writing word equations
Example: Hydrogen + Oxygen
H2O ( Water)
Hydrogen gas reacts with Oxygen gas
to produce Dihydrogen oxide(Water)
Writing word equations

10. Everyday chemical Reactions
Bikes Rusting
Decaying dead body
Plants photosynthesis
Everyday chemical Reactions

11. Answer is A Try It yourself ! CLICK TO SEE ANSWER !
Which one is a skeleton equation ?
A. H2 + O2 = H2O
B. H + O = H20
C. H3 + O3= H2O
CLICK TO SEE ANSWER !
Answer is A
Try It yourself !

12. Create the skeleton equation for, Solid phosphorus burns in oxygen gas to form diphosphorus pentoxide gas.
Homework question

13. THANKS FOR WATCHING