Phase Change
name the three phases of water
solid, liquid, gas
What is one way the rate and amount of solutions can be increased?
Stirring / or add heat / there are others....
Define mass
the amount of matter in an object
What is potential energy?
energy held by an object because of its position relative to other objects
What is the largest planet in the solar system?
Jupiter
What is the special type of vaporization that happens from the surface of the liquid called?
evaporation
Why does a solute disappear-where does it go when it goes "into solution?
it goes in between the water molecules
Define Weight
the response of mass to the pull of gravity
What is kinetic energy?
energy in motion
Are worker bees male or female?
female
What happens to the particles when energy is absorbed?
The move faster and spread farther apart
What is a chemical reaction?
when one substance changes into a new substance with different properties
Define volume
Name one way heat can be transferred. (there are three)
How many teeth does an adult human have?
32
Name one phase change when energy is absorbed (there are three)
melting, vaporization, sublimation
Give an example of a chemical reaction
Define density
comparison between mass and volume
density= mass/volume
Energy can be converted from one form to another, when this happens there is ALWAYS a conversion to thus type of energy....
Heat
How many Great Lakes are there?
5
During what phase change does a solid change to a gas?
Sublimation
How is a chemical change different from a physical change?
chemical: new substance , different properties
physical: it stays what it was / no new substance is formed
What is the difference of mass and weight.
mass never changes and weight is gravity dependent
List the five forms of energy
heat, chemical, mechanical, electromagnetic, nuclear
What is the name of the longest river in the world?
The Nile