today’s warm-up 1. what is the difference between a physical and chemical change? write your...
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Today’s Warm-Up
1. What is the difference between a physical and chemical change? Write your answer in complete sentences.
2. Classify the following as either a physical or chemical change:
a. Plants make sugar from carbon dioxide and water b. Water vapor in the air forms frost c. A goldsmith melts a nugget of gold and pulls it into a wire
The States of Matter
The three states of matter are: solid, liquid, and gas.
These three states of matter differ in terms of compressibility, structure, shape, and volume
Foldable Time
Kinetic Molecular Theory of Matter:
Based on the idea that particles of matter are always in motion.
Theory has 3 basic assumptions (but we are only going to cover the first 2)
Assumption #2
The molecules are in constant motion. This motion is different for the three states of matter.
SolidCompressibility: Not compressible
Structure: Particles are packed together in fixed position(vibrate in place)
Liquid Compressibility: more
compressible than a solid, but barely compressible
Structure: Individual molecules do not stick together(particles SLIDE past each other)
GAS Shape: Indefinite Shape
(takes the shape of its container)
Volume: Indefinite Volume; gases expand to fill whatever volume is available
1. Draw a circle on your paper. Label the circle ‘Solid’ Draw the structure of the solid’s particles in your circle
Solid
2. This state of matter has neither a definite shape nor a definite volume. On your whiteboard write down the name of this state.
4. Draw a circle on your paper. Label the circle ‘Liquid’ Draw the structure of liquid’s particles in your circle
Liquid
Trash Talkin’ RAFT
Role A state of matter (solid, liquid, gas)
Audience A different state of matter (solid, liquid, gas)
Format Trash Talkin’ LetterTopic Properties of state of matter (why is your state great and the other not??)
My Example: Oh hey solid, I heard you have a bone to pick
with me. I heard you said I smell like gas. I AM GAS and that smell must be your upper lip! If you think you can keep up with me you’re dead wrong. While you have to stay put because you have a definite shape and volume, I roam freely and fill whatever space and volume I can. You are so stubborn solid. When people try to press you down, you don’t let them. You are incompressible! I go with the flow and am highly compressible. Finally, I hope you enjoy having all your particles packed together the way you do. My particles are free to stretch out. Just quit being so uptight!
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