Substances that cannot be broken down chemically into other substances are called what?
elements
100
___________________ is a measure of the average energy of random motion of particles of matter.
Temperature
100
The change in matter that alters the form or appearance of matter is what type of change?
Physical Change
100
The measurement of the force of gravity on an object is the object's _______________.
weight
100
The energy of matter in motion is called what?
Kinetic energy
200
Anything that has mass and takes up space is called what?
matter
200
A(n) ________________________________ is formed when two or more substances are so evenly mixed that you can't see the different parts.
homogeneous mixture
200
A change in matter that produces one or more new substances is what type of change?
Chemical Change
200
The measurement of how much matter an object contains is its _______________.
mass
200
Radio waves, visible light from the sun, infraret rays, microwaves, UV-rays, and x-rays are all examples of what type of energy?
Electromagnetic Energy
300
All elements are composed of extremely small particles called what?
atoms
300
A ______________________ is a group of two or more atoms that are held together by chemical bonds.
molecule
300
The change in which ice absorbs energy and melts is an example of what type of change?
endothermic change
300
The measurement of how much mass is contained in a given volume is called what?
density
300
A rubber band pulled tight and about to snap has ________________ energy.
potential
400
Table salt and table sugar are examples of what?
pure substances
400
In a _____________________ mixture, like a salad, you can see the different parts.
heterogeneous
400
The tarnishing of metal is an example of a ____________________ change.
chemical
400
If you drop a marble into a glass of water, the marble will sink because its density is ________________________ than that of water.
greater
400
The fact that matter is not created or destroyed in any chemical or physical change is called the what?
Law of Conservation of Mass
500
Soil, a salad, and sugar water are all examples of what?
mixtures
500
Explain the difference between a mixture and a compound.
A mixture is 2 or more substances that are mixed together but are not chemically combined, they keep their separate properties. A compound is a substance formed when 2 or more elements combine chemically in a set ratio.
500
An ____________________change releases energy in the form of light or heat.
exothermic
500
Calculate the density of an object with a mass of 40g and a volume of 10cm3
4g/cm3
500
Compare and contrast kinetic and potential energy. Provide at least one example of each.
Kinetic energy is the energy of matter in motion. A rolling bowling ball is an example. Potential energy is the energy of an object based on its position and is stored energy. An example is a bike standing at the top of a hill.