Matter
Properties/Changes
States of Matter
Energy
Heat
100
What is matter?
Anything that takes up space and has mass.
100
What is special about a chemical change?
You can't get the original back, the identity of the material has permanently changed.
100
What are the 4 main states of matter?
Solid, Liquid, Gas, Plasma
100
What is energy?
The ability to do work or cause change.
100
Heat moves from a ___________ area to a ________________ area.
Hot -> cold
200
What is the smallest unit of matter?
An atom
200
How do I know a physical change has occurred?
The identity of the object has not changed. Only the shape of the object has changed.
200
What is plasma?
Electrically charged particles
200
What is the law of conservation of energy?
Energy can not be created nor destroyed only transformed.
200
Molecules that are touching move heat by _____________
Conduction
300
What are 3 things that are not matter?
Ex: Sound, light, shadow, emotions, imaginary friends, energy
300
When is a color change a chemical change?
When you can't change the color back. Examples bleaching or fading
300
What is needed to move between states of matter?
An increase in energy/heat
300
List the 5 types of kinetic energy and the 4 types of potential energy.
Kinetic = Sound, Mechanical, Thermal, Radiant, Electrical
Potential = Nuclear, GPE, Chemical, Elastic
300
The person in a top bunk is hotter than the person at the bottom. This is due to which property of heat.
Convection (or that hot air rises and cold air sinks)
400
Matter that is made up of only 1 type of atom?
An element
400
How do you know something is a physical property?
You can observe it with your senses.
400
When a gas loses energy what phase change is occurring?
Condensation (Could say deposition technically as well)
400
Draw a roller coaster and show where the most potential energy is and where the most kinetic energy is.
Highest point should be the potential energy
Lowest point should be the kinetic energy
400
Object A is 100 degrees and it is touching object B which is 80 degrees. Describe what will happen to the heat between the two objects. (hint: conduction is not the answer)
Object A will cool down while object B will heat up (they will balance out probably around 90 degrees)
500
This material is the only material found in all 3 states of matter naturally on the planet. What is the material?
Water
500
What type of change is a phase change?
A physical change
500
When a solid is given a lot of energy, so that it skips a state of matter what is this change?
Sublimation
500
You have a choice between the following 2:
1: A 500lb man is running at 20mph at you
2: A 100lb man is running at 100mph at you
Which has more energy?
Kinetic energy formula =(m*v^2)/2
Man 1 =100,000 J
Man 2 = 500,000 J
Man 2 has more energy
500
Why is heat transferred from the sun to the Earth by radiation?
Radiation can move through space where there is no molecules.