Reactions Day 3

Atoms, substances, bonds, Welcome to FPC: Rewrite the short paragraph below Fill in the blanks When a __________ ___________ happens, _______ are broken. Then, _________ are rearranged and form new __________. After the reaction, new ___________ have been produced. Words to use: Atoms, substances, bonds, chemical reaction

Agenda Visualizing Chemical Reactions Analysis Questions from Lab The Kinetic Molecular Theory

Learning Targets 3- I can explain why changes in temperature and concentration affect the rate of a chemical reaction

Learning Targets TODAY: we are going to focus on I can describe what the kinetic molecular theory says about matter and particles I can identify the relationship between temperature and kinetic energy

Writing and Reading Discussion Group Work Instruction Quiet Focused Active listening On Topic Ask Questions Group Work Focus on topic Fulfill Roles Lean in Instruction Listen Take notes Raise hands

The Mini-Hindenburg H O H O H O H Reactants Product Hydrogen + Oxygen Water H O H O H O H

Chemical Equations and conservation of mass 2 H2 O2 H2O 2 H O O H Two hydrogen molecules and one oxygen molecule react, forming two molecules of water.

Analysis Questions Answer the questions Use complete sentences Work together WHEN DONE: turn in

Particles and States of Matter

Glow Sticks A glow stick contains two chemicals. When the chemicals mix, a reaction occurs: GLOW! What to do: Fill a cup with water and ice Fill a second cup with hot water Put one glow stick into HOT water Put a second glow stick into COLD water Observe

Was there a difference between the hot and the cold? What did you see? Was there a difference between the hot and the cold?

Copy the definition in bold! Temperature Copy the definition in bold! Temperature is a measurement of the average kinetic energy of the particles in a substance High temperature: particles have lots of kinetic energy, high velocity, lots of motion Low temperature: particles have less kinetic energy, lower velocity, less motion

KMT web assignment Go here: http://goo.gl/Gwhb7Z Answer questions on the handout 25 minutes Ended here 3rd and 4th

Temperature INCREASES! What the KMT says Temperature INCREASES! Energy? Velocity? Spacing?

Exit Ticket Facts: On the Exit Ticket: In order for a chemical reaction to happen, the reactants must come into contact or interact. The glow you saw was a chemical reaction The KMT says that when temperature increases, the energy and motion of particles changes. On the Exit Ticket: Explain the differences you saw in the glow sticks in hot water, and the glow sticks in cold water In the hot water the particles in the glow sticks were __________________. In the cold water they were ____________________ . This meant there were more/less ______ in the hot/cold water and thus there was more/less glow.