Mass
What tool do we use to measure mass?
A balance
(1/2 credit scale)
What is the definition of density?
-Amount of matter in an area
-Mass per volume
Find the volume of a box with a length of 5cm, width of 10cm, and a height of 2cm.
100cm^3
What are the two types of balances we have learned about?
A triple beam balance and pan balance
What is the math equation used to measure the volume of a regular shape
L x W x H
When would I use mL as a unit for volume?
Calculate the volume of a hairbrush if the water in the graduated cylinder was 123 mL before the hairbrush was put in and the volume of the liquid after the hairbrush was submerged rose to 256 mL.
What is 133 cm3 or 133 mL
What is the definition of MASS?
How much matter something is made up of.
How would I find the volume of a marble? What is the name of the method?
Water displacement
If a person has a mass on 68kg on Earth, what is their mass on the moon?
What is 68kg - MASS NEVER, EVER, EVER CHANGES! THE AMOUNT OF MATTER IN AN OBJECT DOES NOT CHANGE BECAUSE OF GRAVITY. ONLY WEIGHT CHANGES BECAUSE OF GRAVITY.
What is the difference between weight and mass?
Weight changes based on gravity.
Mass does not change based on gravity/location.
Which has a larger volume: a small, heavy rock or a light-weight blow-up beach ball.
Volume is how much space something takes up: beach-ball.
Explain why the unit for density is g/cm3
You divide mass by volume so the density unit is the mass unit over the volume unit.
An item has mass of 36g and a volume of 12mL. What is its density?
3g/mL or 3g/cm^3
If the density of maple syrup is 2g/mL, and I have 16 grams of syrup, what is the volume of my maple syrup?
8g
What does it mean for something to be considered "very dense"?
-It means that it has a lot of mass crammed into a small amount of space
-It is heavy for how small it it
An item has a volume of 25cm^3 and a mass of 10 grams. What is its density?
0.4 g/cm^3