Q2 Balance These Equations; then identify the type of reaction. Sb + O2 ---> Sb4O6 2. Mg + N2 ---> Mg3N2 3. H3AsO4 ---> As2O5 + H2O 4. Al(OH)3 + H2SO4 ---> Al2(SO4)3 + H2O

Q2 Balance These Equations; then identify the type of reaction. Sb + O2 ---> Sb4O6 2. Mg + N2 ---> Mg3N2 3. H3AsO4 ---> As2O5 + H2O 4. Al(OH)3 + H2SO4 ---> Al2(SO4)3+ H2O 2 3 2 3 2 2 2

Today’s Objective: I understand the conditions that affect the rate of a chemical reaction.

Unit Test: Tuesday Study your vocab cards

Accounts for conversion of small amounts of mass to energy Mass-Energy Equation Accounts for conversion of small amounts of mass to energy

Stored inside of the chemical bonds of the substances Chemical Energy: Stored inside of the chemical bonds of the substances

Energy is needed to break bonds.

Amount of energy (usually heat) needed to start Activation Energy Amount of energy (usually heat) needed to start a chemical reaction.

The rate the reaction progresses at... Reaction Rate: The rate the reaction progresses at... How fast the reaction is occurring. Fast Slow

Conditions that affect the rate of a chemical reaction

More movement = More collisions = More reactions = Faster reaction rate

Affects Reaction Rate Temperature More heat = faster rate

Surface Area More surface area  Faster reaction Stirring

Concentration More reactants  faster reaction

Catalyst Substance that affects reaction rate without interfering with the reaction

A catalyst lowers the amount of energy that is needed to start the reaction. Normally needs this much energy With catalyst only needs this much energy

Reduce the volume

2) Increase concentration

3) Increase the velocity

4) Increase surface area

5) Add a catayalst to lower activation energy