Sound
This instrument is similar to our ear.
This is a force that pulls you to the center of the Earth.
What is gravity?
A change in matter such as tearing paper or melting an icecube.
What is a physical change?
Smallest unit of matter.
What is an atom?
A wave or vibration.
What is sound?
This determines if something sinks or floats.
What is density?
A change where the matter changes it's properties, such as baking cookies or lighting a fire.
What is a chemical change?
This orbits the center of the atom and is negatively charged.
This is needed for sound to travel.
This is why a rock or cannon ball sinks when it is put in water.
What is more dense than water?
The type of change that happens when you mix baking soda and vinegar.
What is a chemical change or chemical reaction?
This is in the center of the atom and has a positive charge.
What are protons?
This happens to molecules when they meet a sound wave.
What is vibrate?
When something pushes water out of the way when put into water.
What is displacement?
Evidence that a chemical reaction has occurred. (List at least 4)
What is an emitted odor? Light emitted? Gases being released? Color change? Heat being released?
This is in the center of an atom and does not have a charge.
You cannot hear sound here.
What is a space? (or vacuum)
This is why pennies do not sink when in a boat.
What happens when a boat takes up more space making it less dense?
Sometimes during chemical reactions, you can see substances change states of matter. These state(s) of matter were present BEFORE the baking soda came in contact with the vinegar. These state(s) of matter were present AFTER the baking soda came in contact with the vinegar.
(BEFORE) What is a liquid? What is a solid?
(AFTER) What is a liquid? What is a gas?
Atoms have so much space in them, that if you remove all the empty space from all of the humans on the Earth we would all fit into this.
What is a sugar cube?