1. Bundle 3: Matter
Types of Reactions

2. What is the density of the mineral sample?
WARM UP 10/10/17
Solve the following problem in your IAN Notebook;
A balance and a graduated cylinder are used to determine the density of a mineral sample. The sample has a mass of 14.7 [g] and a volume of 2.2 [mL].
What is the density of the mineral sample?

3. Synthesis Reaction
Two separate elements or molecules chemically join to form one new compound
Ex. 2H2 + O2  2H2O
N2 + 3H2  2NH3 (ammonia)

4. Decomposition Reaction
One molecule is broken into different elements or compound + element.
Ex. 2H2O2  2H2O + O2
Hydrogen peroxide
CaCO3  CaO + CO2
Limestone

5. Combustion Reaction
A substance reacts with oxygen (O2) to produce heat and light. Ex. C + O2  CO2 C6H12O6 + O2  CO2 + H2O What substance must be present for a combustion reaction to occur? OXYGEN GAS

6. WARM UP 10/13/17
Solve the following problem in your IAN Notebook;
A student must identify an unknown mineral with a mass of 210 grams.
The student lowers the sample into a graduated cylinder and calculates the density. The measurements from the graduated cylinder are shown on the right.
What is the density of the mineral?

7. Reactions Gallery Walk
When the teacher tells you to start, go to each lab table and identify the type of reaction presented.
WRITE the reaction type in your notebook and EXPLAIN why you think it is this type of reaction.
First team to get all three right without cheating or giving the answer to other teams gets 5 points added to their test grade.
Every team that gets them all right without cheating or giving the answer to others gets 2 points added to their test grade.

8. Exothermic Reaction
An Exothermic Reaction releases heat during the reactions and does NOT require any heat to start the reaction.
Heat exits the reaction
No heat needed to start reaction

9. Endothermic Reaction
An Endothermic Reaction requires heat to get started and absorbs or draws in heat during the reaction.
Heat to get started
Heat goes INTO the reaction

10. Endo vs. Exo
Endothermic – Energy of the products is greater than the reactants
Exothermic – Energy of the products is less than the reactants

11. Fusion Reaction

12. Fission Reaction
A nuclear reaction that occurs when a heavy atom splits into smaller atoms releasing an enormous amount of energy.