density Flashcards
what is the equation for density?
density =mass/volume
Why do objects sink?
Start: an object in water
- The density of the object is greater than the density of the water
end: so it will sink
how do you find the mass of an object?
put it on a top hand balance
how to you find the volume of an object?
Regular - anything where you can use an equation
Irregular - you put the object into a eureka can with water and the water come out of the spot and your measuring jug will tell you how much water has come out. this is the volume of your object
- you fill-up the measuring cylinder up to a certain volume
- tie your irregular object to a thin piece of string
- lower your irregular object in the water until it is fully submerged
- check how much the water level has risen
- do the final volume (V2) subtracted from the initial volume (V1)
what does / mean?
it means per
what is the definition of density?
Density is how tightly packed something (particles) is in a given volume
Why do objects float?
Start:- Object in water
-Has lower density than the density of water
End: meaning it will float
how is the density of a solid different from the density of a liquid
Start: density of a solid and density of a liquid
- The density can be high or low
-The density of a solid is higher than the liquid
-As the particles in a solid are more tightly compact compared to a liquid
End: so they are different
What does compact mean
How tight something is packed/ how closely the particles are arranged
What is the definition of volume?
The volume is how much space something takes up
What is the definition of mass?
how many particles there are in something
Finish the sentence
Density is how much _______there is in 1cm^3 of material
Mass
Finish the sentence
A material with a high density feels _______ than a material with a low density
heavier
Finish the sentence
Materials with a high density______when you ou put them in water
sink
Finish the sentence
Materials with a ________ density float
Low
