States of Matter
This state of matter has the lowest kinetic energy of particles
?? = mass/volume
What is the formula for density
An object has a mass of 6 g and a volume of 2 cm^3. Find the density
What is 3 g/cm^3?
You have a slice of pizza. You take a few bites of the slice of pizza. Did the density of the pizza change?
No! The mass changed because you ate it, and the volume changed because you ate it, but that keeps the density the same.
This is the process of a solid turning into a liquid
What is melting
This state of matter has the most space between its particles.
What is a gas
?? = Mass/Density
What is Volume?
A metal has a volume of 15 cm^3 and density of 3.0 g/cm^3. It's mass would be....
What is 45 g?
What is the density of pure water?
1.0 g/mL
This is the process of a liquid turning into a gas
This state of matter has definite shape and definite volume
?? = Density x Volume
What is Mass
A box has a volume of 50.0 cm^3 and mass of 75.0 grams. Its density is...
What is 1.5 g/cm^3?
An item has a density of 0.5g/cm^3. Will it sink or float in water?
Float
This is the process of a gas turning into a liquid
What is condensation
This state of matter has no definite shape and no definite volume
What is a gas
A rock has a density of 3.2 g/cm^3 and a mass of 7.4 g. What formula would you use to find the volume?
Mass/Density
A liquid has a mass of 24 g and density of 2.0 g/mL. It's volume is this....
What is 12 mL?
An item has a density of 2.5g/cm^3. Will it sink or float in water?
sink!
This is the process of a solid turning into a gas
This state of matter has fixed volume, but no definite shape
What is a liquid
Density x Volume
An object is placed in beaker with 20 ml of water and the water rises to 30 ml. The mass is 50 g. What is the density?
What is 5.0 g/mL?
2 rocks are dropped in a beaker filled with water. Rock A floats and Rock B settles at the bottom. Explain why this happens, using the term density.
Rock B is more dense than water and Rock A less dense than water.
Which phase changes gain heat energy? (2)
Melting, Evaporation(Boiling), Sublimation