A popped system in Lab 2.5 would cause this. Be specific.
What is a decrease in mass?
100
The copper sulfer system was closed with
What is latex and rubber band?
100
5g = ______mg
What is 5000mg
200
This property of matter can be measured using
liquid displacement.
What is volume?
200
112 grams of potassium hydroxide is made from 9 grams of water. How much potassium oxide was used?
What is 103 grams?
200
A glass of ice tea is placed
on a balance. After a few minutes
condensation appears on the
outside of the glass. This change
in mass may occur. Be specific.
What is an increase in mass?
200
Steve masses his pen and
records 32.85g. He immediately
remasses the pen and gets
32.84g.
His results differ for this reason.
What is reproducibility of the balance?
200
25mm = ______cm
What is 2.5cm?
300
It takes up the same amount
of space as one cubic centimeter
What is one milliliter (mL)
300
Even though matter may change
in many ways, if the changes
occur in this type of system,
the change in mass can be measured
What is a closed system?
300
When plotting experimental data on a histogram, we look for a trend in this region
What is the range of reproducibility?
300
Given reproducibility, the most commonly
occurring change in mass in the Chapter 2 Labs was...
What is 0.00g
300
Convert 27m to yards (1 yard = 0.91 meter)
What is 29.67 yards
400
This ‘formula’ is used to calculate change in mass.
What is A - B = C
400
Regarding the histogram on the front board: There are two items missing from the histogram.
What are x-axis label and trash?
400
The cap loosened in the Mass of Gas Las for what reason?
What is to determine the mass of the gas?
400
Regarding the histogram on the front board: If a group
mistakenly used 2 ice cubes instead of 1, the data would be plotted in which bin?
What is any bin?
400
Convert 40cm to inches (1 inch = 2.54 cm)
What is 15.75 inches?
500
These are problems for using volume as a sole measure of matter
What is dissolving changes volume, gasses can be compressed or expanded
500
After enjoying a campfire, you notice the mass of the ashes that are left is much less than the mass of the original logs. While burning, the logs changed chemically and became this type of matter.
What is gas?
500
This is a clue a chemical change has occured
What is cannot be reversed; new substance produced; gas produced
500
The ice melting and salt dissolving are examples of this type of change
What is physical change?
500
Convert 15 gallons to liters (1 gal = 3.79 liters)