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Chemistry unit 3 rev

review of chemistry unit 3

What is a particle? A particle is the smallest piece of any substance that is still that substance.
What is compression? Compression means: to press or force a substance into a smaller space or volume.
What is expansion? Expansion is an increase in volume.
How do air particles move in a closed syringe system when the plunger is compressed? All gas particles move faster and hit harder when they are compressed.
How do air particles move in a closed syringe system when the plunger is expanded? All gas particles move slower and hit softly when the volume of air is expanded.
What are the 3 phases of matter? The 3 stages of matter are: solid, liquid, and gas.
How do gas particles move? Gas particles have a lot of empty space around them.They move independently and can be compressed into a smaller space.
How do liquid particles move? Particles in a liquid are touching and can move over and under each other.That allows liquid to flow.
How do solid particles move? Particles in a solid are touching and bonded tightly.When particles can't move their size and shape stays the same.
Why did the blue cube get smaller in our class experiment? Air particles can't enter the closed cell.The air particles in the syringe was compressed- pressing the air particles in the syringe AND the cube closer together.
What is between gas particles? There is NOTHING between gas particles but EMPTY SPACE.
Created by: cecelia_morris



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