Scaling particle diagrams
Unit multipliers
Histograms/ error analysis
Lab Procedure
100

The density of wood is 0.5 g/cm3. The density of steel is 7.3 g/cm3. If a particle diagram were drawn for steel that contained ONE particle, how would you draw a particle diagram for wood that accurately compares? (No math needed for this answer)

The wood box would have to be LARGER

100

Convert 500 g to kg.

There are 1000 g in 1 kG

500,000 kg

100

DAILY DOUBLE

What is Ms. Poole's favorite animal?

Prairie Dog <3

100

What was the goal of the lab?

To measure the density of a gas

200

What is the first step in creating ACCURATE particle diagrams?

Largest density/ smallest density = how many times more dense the larger density is.

200

DAILY DOUBLE!!!

What continent is the country of Georgia in?

Asia

200

What is the purpose of a histogram?

Helps determine a range of agreed upon values from a large group of data.

200
What was in your initial system during the lab?

Flask, water, weighboat, and alkaseltzer

300

The density of nitrogen is 1.61 kg/m3. If a box that is 1 in x 1 in is drawn for chalk (1900 kg/m3), what would the length of each side of the nitrogen box have to be to accurately compare? Your answer can be in inches

34.35 in

300

The density of helium is 0.0001641 g/cm3. Convert this into units of lbs/ft3

There are 1000 g in 1 kg, 2.21 lbs in 1 kg, 12 inches in 1 ft, 2.5 cm in 1 inch. 

idk i didn't have time to do the calculation :/

300

What is the typical shape that we expect from a histogram?

A bell curve / normal distribution

300

How did you determine the volume of the gas?

By refilling the plastic soda bottle, because the volume of water displaced= the volume the gas was occupying
400

The density of natural gas is 0.8 kg/m3. If a box that is 1 in x 1 in is drawn for water (1000 kg/m3), what would the length of each side of the natural gas box have to be to accurately compare? Put your answer in meters.

There are 2.5 cm in 1 inch, there are 100 cm in 1 m.

idk i didn't have time to do the math :(

400

The average co2 canister has a mass of 100 g, which means it contains ~100g of gas compressed into a small space. If the gas were allowed to leave the canister and expand into the atmosphere, what volume would it occupy in cm3. 

The density of co2 under normal conditions is 1.8 kg/m3.

There are 1000 g in 1 kg, there are 100 cm in 1 m.

idk I didn't have time to do the calculation :/

400

A group kept a sizeable air bubble in their water bottle before collecting the gas. What effect would this error have on their density value?

It would cause the volume measurement to be too large, therefore the density would be too small
400

How did you determine the mass of the gas and justify why we can assume this is the mass of the gas.

By subtracting the final mass of the system by the initial mass of the system. This works because we only allowed the gas to leave the system, meaning the change in mass of the system should be the mass of the gas that left.

500

The density of carbon monoxide is 1.16 kg/m3. The density of water is 1000 kg/m3. A 500 cmx 500 cm box is drawn for carbon monoxide, what is length of each side of a water particle diagram box?

17 cm

You have to DIVIDE the area by the 862 because it would be smaller sides

500

What is the radius of a cylinder of steel (density of 7.3 g/cm3) that has a mass of 50 pounds and a length of 30 feet.

There are 12 in for 1 ft, there are 453 g in 1 pound, there are 2.5 cm in 1 inch.

0.049 cm

500
During the lab, a group took the stopper out of their flask before the reaction was finished and let it sit on the counter for a couple minutes before measuring the change in mass. Would this error cause the density to be too high, too low, or have no effect?

Density would be greater because mass is still leaving the system but not being collected for the volume measurement.

M
e
n
u