The secret universe of a man named Antoine. Essential Question: How can we use atoms and molecules to explain temperature?

What does Kinetic Molecular Mean?  Kinetic means movement.  For something to have kinetics, it has to move.  Molecules make up the world. The world may seem solid, but we’ve seen things in class that objects are made of tiny moving spheres.

Kinetic Molecular Theory  How did we get here?  We saw in class the following:  Food dye spread faster in hot water  Heat makes stuff bigger, both solids and gases  Mixing things can change temperature  Things evaporate faster if they’re hotter

The Explanation  Kinetic Molecular Theory Definition:  “A hot solid, liquid, or gas is one in which the molecules it is made out of are moving faster than normal”.  “A cold solid, liquid, or gas is one in which the molecules it is made out of are moving slower than normal.”

History  KMT started with a man named Antoine Lavoisier.  He realized that hot objects never lost any mass, which meant they couldn’t be giving off any “heat”  So heat couldn’t be a thing. It didn’t exist. The model was wrong.

Antoine’s model  Antoine Lavoisier (possibly the greatest scientist of all time) did experiments to test a model he was pondering.  Antoine melted ice to see how the layers interacted.  He found, with careful measurement, that objects needed to touch each other to get hot or cold.

Moving spheres.  Antoine used his genius brain to imagine little spheres of ice colliding with each other like car crashes.  Using Newton’s physics, he realized these millions of tiny crashes made things the same temperature.  Therefore, temperature was just how much the spheres that something is made out of were moving.

Current Model  The current model that scientists refined after the French killed Antoine has been used to explain lots of cool stuff in nature that confused us for years.  For example, it explained why ice melts when skates push on top of it.

Why it’s important  KMT can be used to explain:  why candy dissolves in water  why water road salt melts ice so we can drive, and,  why we can use electricity to heat up or cool down a room (air conditioning).

Turning it in  Please do the following:  1. Write a summary and questions for your C- Note  2. Turn in your C-Note  3. Be sure you’ve added your own questions to the question column for full points  Thanks!

Your Modeling  HWK: Complete one of the following RAFT entries RoleAudienceFormatTopic MoleculeNeighbor Molecule Text conversation (10 lines) I’m about to run into you! Lavoisier Family Butler Antoine Lavoisier LetterWhat are you doing in your study? Piece of Candy Water Why are you dissolving me?!?!