Equations and units
What is the equation for density?
D=mass (m)/volume (v)
A graduated cylinder has 10 ml of water in it. After adding a rock, it has 12.5 ml of water. What is the volume of the rock?
2.5 ml
If something has a lower density than a liquid it will...
float
What is the equation for Mass?
M=DxV
A metal coin has a mass of 10 g and a volume of 1.4 cm3. What is its density?
7.14 g/cm3
if something has a higher density than a liquid it will....
sink
kilograms (kg), grams (g), or milliliters (ml)
What would be the volume of 30 grams of a substance if its density is 0.10 g/cm3 ?
300 cm3
If something had the same density as a liquid it will.....
neither sink or float, it sits in the middle
What is the equation for volume if you have density and mass?
V=M/D
A block of aluminum occupies a volume of 33.0 mL and has a mass of 45.5 g. What is the density?
1.38 g/ml
True or False: All heavy things sink
False, depends on shape and volume!
Name me at least one unit we use to show density
g/ml or g/cm^3 or kg/ml or kg/ml^3
Which object has the most density?
A) Air B) Wood C) Steel D) Water
C) Steel
Which of these would most likely float?
A) Metal Coin B) Rock C)Rubber Duck D)Marble
A rubber duck