Density
What is the formula for density?
Density = mass/volume
What state of matter has the strongest bonds?
Solid
What energy is given off as heat?
thermal
Define what light does during Refraction and Reflection.
Refraction (light bends)
Reflection (light bounces)
Molecules move farther apart but remain the same?
Physical
What is the volume of a box when the width is 4cm3? Must include units in answer
4x4x4= 64cm3
Volume (length x height x width)
What state of matter has particles moving the fastest?
gas
What type of energy is considered "stored" energy?
potential
Why can light waves travel in space, but sound waves cannot?
Light can travel in a vacuum but sound waves need matter/particles to travel as vibrations.
Would molecules move faster or slower when heated?
Faster
What is instrument is used to measure mass?
Triple Beam Balance
What state of matter has a definite volume but no definite shape?
Liquid
The sun causes a plan to grow. What do you call the types of energy produced?
_______ energy / ______ energy
light to chemical
What type of waves have the greatest energy? And how do you know?
Gamma rays because the tighter/shorter the wavelength, the greater the energy.
If identical molecules are used in compounds; what substance are they considered?
Pure substances!
What is the Mass of an object with a density of 3 g/cm3 and a volume of 2g/ml?
(Hint: Mass = Density x Volume)
6 cm3
When heat is added to a solid, what physical change occurs?
Melting
What type of energy is also called mechanical energy?
kinetic
Why are shorter waves length associated with more energy?
More waves can move through a given space in a shorter amount of time.
When a coin rusts the molecules change, what type of change/reaction is this?
Chemical Change
What is the connection between density and convection?
As particles warm, they become less dense and rise. When they cool, they become more dense and sink.
What process occurs when gas is cooled to a liquid? (hint: water on a mirror during a hot shower)
Condensation
What type of energy can move through a vacuum?
Light or solar energy
Which waves have the least amount of energy on the electromagnetic spectrum? Which has the most?
Radio Waves, Radio waves have a 0.000001V volts and Gamma rays have 1,000,000 volts.
When a solute dissolves in a solvent this change is know as a ________ _________.
Physical Change because molecules remain the same.