Density Calculations
Science Equations
Particle Diagrams
Significant Figures
Potpourri
100
A block of material has a mass of 24 g and a volume of 8 cm3. What is the density of the block?
3 g/cm3
100
Which is heavier a kilogram of steel or a kilogram of feathers? 
Neither. They have the same mass, though steel is more dense.
100
Which Sample is the least Dense?
Sample C
100
What does the number of significant figures tell us about a measurment?
The Precision of the Measurement
100
What element has the chemical symbol Pb
Lead
200
What is typically denser, Solids or Gases?
solids
200
On a Mass vs Volume graph, what is the dependent variable and what is the independent variable? 
Mass is the Dependent Variable
Volume is the Independent Variable
200
In particle diagrams what represents Mass?
The Number of Particles
200
How many significant figures are in 10,290
4
200
What element can you chew like gum and makes the touch screen on your phone work?
Indium (In)
300
A rectangular wooden block has a mass of 15.00 g. Its dimensions are length = 3.00 cm, width = 2.00cm, and height = 5.00 cm. What is the density of the block? (Round for significant figures)
0.500g/cm3
300
What does it mean on a Mass vs Volume Graph when the y-intercept equals 0?
It means that when there is no volume of a substance there is no mass.
300
What is the most abundant Element in the universe?
Hydrogen
300
How many significant figures are in 0.03040 g
4
300
What elemental metal is liquid at room temperature?
Mercury (Hg)
400
A cube of metal has a length of 2.29 cm and a mass of 125.97 g. What is the density of the block? (Round for significant figures)
10.5 g/cm3
400
A mass vs. volume graph shows a line passing through (0,0) with a slope of 1.33 (g/cm3). Which science equation (DV = Slope * IV + y-intercept) represents this line?
Mass(g) = 1.33(g/cm3) * Volume (cm3) + 0(g)
400
In particle diagrams what represents Volume?
The Size of the Box
400
Calculate:
1.000cm * 3.00cm * 12.00cm
Then round for signifiant figures
36.0 cm3
400
A typical cumulus cloud has a volume of 1,000,000,000 cubic meters and a water/air density of around 0.5 grams per cubic meter. Does a cloud like this weigh MORE or LESS than an adult blue whale?
The cloud's total mass is 500,000 kg (about 1.1 million pounds) making it roughly 3 to 4 times heavier than a fully grown blue whale (which weighs around 150,000 kg)
500
A king asks you to tell if his crown is really made up of 18 karat gold (15.86 g/cm3) like the jeweler told him. You find the mass to be 1,400 grams.
But the volume is hard to find as the crown has an irregular shape. How could you find the density?
Archimedes figured this out by putting the crown into water and measuring the amount of liquid it displaced.
500
Calculate the Slope of Substance A and Write the Science Equation for it (DV=Slope*IV+y-intercept).
Mass(g)=3(g/cm3)*Volume(cm3)+0(g)
500
What is the lightest element that produces less energy than it consumes when you fuse it? 
Iron (Fe)
500
Calculate:
1.30mL + 3.75mL + 12.5mL
Then round for signifiant figures
17.6 mL
500
A neutron star is around 10¹⁴ grams per cubic centimeter (around 100 trillion grams per cubic centimeter). If the Empire State building weighs 3.31 × 10¹¹ grams, how many cubic centimeters of neutron star would you need to equal the mass of the Empire State Biulding?
You would need only 0.0033 cubic centimeters of neutron star material to equal the mass of the entire Empire State Building.