Heat transfer of energy that comes from the sun
What is Radiation?
Between the following elements, this one is a poor conductor of heat.
F - K - Fe - Ag
F - Fluorine?
a change in matter in which the substance that makes up the matter change into other substances.
chemical change
Identify the element from this Bohr model
Calcium
A chemical reaction where heat is absorbed and the surrounding temperature falls
What is endothermic?
The temperature at which an element or compound changes from solid to liquid.
Melting Point
Point where KE is highest and lowest
Kinetic Energy highest - Point X
Kinetic Energy lowest - Point W
the ability of a substance to be hammered or rolled into sheets.
malleability
Motion happening between 5:00 and 5:30
At rest
Type of wave behavior seen here.
What is refraction?
Mass per unit volume of an object as compared to pure water.
What is Density?
Of the following choices, these are signs of a chemical change:
-change in color, size and shape
-change in color, produces gas and heat
-change in states of matter (freezing, melting, boiling)
change in color, produces gas and heat
Motion that occurs after 30 seconds
Slowing down, decelerating, negative acceleration
a positively charged particle in the nucleus of an atom.
proton
Baking bread in an oven is an example of a chemical or physical reaction?
What is a chemical reaction?
Rust forms when iron is exposed to oxygen and moisture for a long period of time. Rust indicates this type of chemical reaction.
Chemical reaction
new substances formed in a chemical reaction
products
Which reaction can be reversed? Physical or Chemical
What is a Physical reaction?
Type of motion that this graph indicates
Constant motion (speed)
Number of protons, neutrons and electrons in Potassium
19 - protons
19 - electrons
20 - neutrons
This will happen to 2nd bulb if the 1st bulb goes out.
It will remain lit.
Point with highest and lowest potential energy
PE highest at W
PE lowest at X
This happens to particles as energy is removed.
Kinetic energy decreases and particles move closer together (volume decreases and density increases)
When heat moves from two things at different temperatures and must be touching
What is conduction?
a change in the size, shape, form, or state of matter that does not change the identity of the matter.
physical change