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AGHS - Chem - Density Simbucket Lab

Last updated about 5 years ago
32 questions

Density Lab

In this activity, you will similate common ways of making measurements in the lab and use properties of density to determine the identity of an unknown object.
Open this link: https://www.simbucket.com/density/
or use the embed below:

Click the blue button at the top to "Turn Fluid into Water." This should set the fluid denisty to 1.0 g/mL.
Note the "Reset" button at the top to quickly reset any changes you make.

The yellow triangle on the right side of the beaker of water represents the bottom of the meniscus, or the place where you measure the volume of water. To the left of this triangle is the actual measurement written out and measured to the nearest tenth of a milliliter (mL).

Note: The container looks like a beaker, but we'd normally use a graduated cylinder for accurate measurements.
1

Match the term to its definition

Draggable itemCorresponding Item
Volume
The amount of matter that will fit into a given amount of space
Density
The amount of matter in something
Mass
The amount of space that an object occupies

Mass and Volume Relationships

An object will float in water if it's density is less than that of water, 1 g/mL. It will sink if the density is greater than 1 g/mL. Keeping the blue mass slider below the beaker the same, drag the red volume slider to either side and see what happens to the red block in the water.
1

If the volume decreases, what happens to the block?

1

What does this tell you about the density?

1

If the volume increases, what happens to the block?

1

What does this tell you about the density?

1

Now click "Reset" and prepare to play with the mass slider beneath the beaker; what do you notice?

1

The opposite is also true. Since you now know how to tell if an object is more or less dense than water based on its bouyancy (ability to float), translate connect these ideas:

Density of sample objects

On the right side of the screen, click the box that says, "gold" to change the material of the object to gold.
  1. Click the gold box and drag it to the balance. Record the mass in your notes.
  2. Look at the beaker. Record the volume of the water without the gold box.
  3. Drop the gold box into the water. The water level should rise. Record the volume of the water AND the gold box.
  4. Subtract the volume of water from the water + gold to find the volume of the gold. This is a process of measuring volume through the premise of water displacement. (Note: If you got a negative number for the mass of gold, you did not follow the directions above and instead subtracted the water+gold from the water.)
1

What was the mass of the gold to the nearest hundredth of a gram? (Do not include units as you normally would if you were doing this lab on paper. The unit would be g.)

1

What was the volume of the gold to the nearest tenth of a mL? (Do not include units as you normally would if you were doing this lab on paper. The unit would be mL.)

1

Using the formula for density that you learned in class,
and your answers to the previous problems, calculate the density of your gold block. Type your answer, rounded to the correct number of significant figures below. (Do not include units as you normally would if you were doing this lab on paper. The unit would be g/mL)

Now do the same procedures for the remaining block types, going across the top row and then the bottom row. Answer all questions numerically (aka, don't type the units). All measurements should be as accurate and precise as possible with the given equipment.

HINT: To get an accurate volume reading, you need to make sure the block is entirely submerged. To do this, you can either click and drag it under water, or click "Reset" up top and change the the fluid density until you find a density at which the block sinks. Make your volume measurements in this new fluid. You can always turn the fluid back to water with the blue button later.

If your answer is a decimal, be sure to include the leading zeroes as shown here in bold: 0.12345

Lead

1

What is the mass of the lead in grams?

1

What is the volume of the lead in milliliters?

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What is the denisty of the lead in g/mL?

Foam

1

What is the mass of the foam in grams?

1

What is the volume of the foam in mL?

(HINT: To get an accurate reading, you need to make sure the foam block is entirely submerged. To do this, you can either click and drag it under water, or click "Reset" and change the the fluid density until the foam block sinks and make your volume measurements in this new fluid.)

1

What is the density of the foam in g/mL? (Remember your sig figs!)

Ice

1

What is the mass of ice in grams?

1

What is the volume of ice in mL?

1

What is the density of ice in g/mL? (Remember sig figs!)

Iron

1

What is the mass of iron in grams?

1

What is the volume of iron in mL?

1

What is the density of iron in g/mL? (Remember sig figs!)

Wood

1

What is the mass of wood in grams?

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What is the volume of wood in mL?

1

What is the density of wood in g/mL? (Remember sig figs!)

Rubber

1

What is the mass of rubber in grams?

1

What is the volume of rubber in mL?

1

What is the density of rubber in g/mL? (Remember sig figs!)

????? Unknown

1

What is the mass of ????? in grams?

1

What is the volume of ????? in mL?

1

What is the density of ????? in g/mL? (Remember sig figs!)

1

Given the following actual densities from a textbook, the unknown object is likely which of the following: