Chapter 1
Things are made up of....
Molecules.
When something gets hotter its molecules are moving___ and have more Kinetic energy
Faster and have more kinetic energy
Define temperature
A measure of the average speed of the molecules of a thing.
When something gets hotter, its molecules move...
Faster
When a thing gets colder, its molecules are moving____ and have ____
Slower and have less Kinetic Energy
Define Average
a number that summarizes a set of data and that can be computed by adding all the numbers in a list and then dividing by the number of numbers in the list.
Slower
When two things come in contact, their molecules collide, and kinetic energy transfers from the _____ moving molecules to the ____ moving molecules
faster moving to the slower moving
Define Equilibrium
a balanced state in which a system is stable, such as when two or more samples are at the same temperature
Why is there a limit to how cold things can get?
Because there is a limit to how slowly something can move!
Energy isn't created or ____. Therefore, as energy transfers, it increases in one part of the system as it ____ in another part of the system.
Destroyed, decreases
a group of atoms joined together in a particular way pasteurize: to make something safe to eat or drink by heating it sample: a small part that is meant to show what the whole is like. This is the definition of a molecule
Molecule
What was the coldest temperature ever recorded? Hint look back at the "Absolute Zero" article.
-94.7 degrees Celsius or -135.8 Degrees F
The molecules of a system will transfer energy until the system reaches a stable state known as ________________, in which all of the molecules are moving at about ___________________ speed.
Equilibrium and the same
the ability to make things change and to reach a conclusion using evidence and reasoning.
Energy and infer