Density

The two things we need for density are mass and volume Balance is used to measure mass Balance is used to measure mass Read each rider and add together being careful to check scale Read each rider and add together being careful to check scale In grams In grams A graduated cylinder is used to measure volume and you read the meniscus or bottom of the curved line A graduated cylinder is used to measure volume and you read the meniscus or bottom of the curved line Use water displacement In ml

Water displacement Pour water in graduated cylinder and mark your starting point Pour water in graduated cylinder and mark your starting point Drop in object and measure where your water level went up to Drop in object and measure where your water level went up to Subtract your start level from the end level Subtract your start level from the end level Your answer is your objects volume Your answer is your objects volume

Volume of a Regular Object All objects take up space All objects take up space The amount of space something takes up is its volume The amount of space something takes up is its volume Length X width X height = Volume Length X width X height = Volume Answer is in the unit used and cubed written ^3 Answer is in the unit used and cubed written ^3 EX: 2cm X 4cm X 1cm = 8cm^3 EX: 2cm X 4cm X 1cm = 8cm^3

I DENSITY Mass divided by Volume equals Density Mass divided by Volume equals Density Density of H2O is 1 g/mL

9. What is my density? Mass of object 50 g Mass of object 50 g Volume of object 10 ml Volume of object 10 ml Density of object ???? Density of object ????

What is my density? Mass of object 40 g Mass of object 40 g Volume of object 5 ml Volume of object 5 ml Density of object ???? Density of object ????

What is my density? Mass of object 100 g Mass of object 100 g Volume of object 50 ml Volume of object 50 ml Density of object ???? Density of object ????

What is my density? Mass of object 40 g Mass of object 40 g Length = 5m Length = 5m Width= 2m Width= 2m Height = 2m Height = 2m Volume=??? Volume=??? Density of object ???? Density of object ????

How to set up lab in notebook: Create a square in notebook with each of the following items addressed Name of item Name of item Mass= Mass= Volume= Volume= Density = Density = Sink or Float in water= Sink or Float in water= Why?= Why?= Will the object sink or float in a liquid with a density of 2.5 g/ml? explain: Will the object sink or float in a liquid with a density of 2.5 g/ml? explain:

Density Water’s density is 1g/ml Water’s density is 1g/ml Anything with a density greater then 1 sinks Anything with a density greater then 1 sinks Anything with a density less then 1 floats Anything with a density less then 1 floats Liquids will separate based on their density the most dense at the bottom least dense on the top Liquids will separate based on their density the most dense at the bottom least dense on the top