A measurement of how much matter something is made of is called _______.
What is mass?
100
Contrary to society's laws, where people can be fined or imprisoned for breaking them, these Laws can be adjusted if well-performed experiments repeatedly appear to violate them.
What are the Laws of Nature?
100
To indicate a loss of mass in a system, change must be listed with this symbol preceding it.
What is a negative sign?
100
This type of plot presents data by the number of times a value appears in an interval or bin.
What is a histogram?
200
8.00 ft --> 244 cm
8.00 ft x (12 in/1 ft) x (2.54 cm/1 in)
200
The SI unit of measurement of mass is _____.
What are grams?
200
This Law states that under specific conditions, there will be no change in mass before and after a physical change or chemical reaction between substances.
What is the Law of the Conservation of Mass?
200
The change in temperature from 16 degrees Celsius at noon, to 11 degrees Celsius in the evening would be reported as ____.
What is -5 degrees Celsius?
200
When making a histogram, ____ should always be placed within an interval or bin.
What is zero?
300
18,000 cm --> 590 ft
18,000 cm x (1 in/2.54 cm) x (1 ft/12 in)
300
This is the laboratory tool used to measure mass.
What is a balance?
300
The Law of the Conservation of Mass explicitly states that a reaction or change must occur within a ______ for the law to apply.
What is a closed system?
300
Before massing any object or substance, it is important to perform this procedural step - zero of you should get this wrong.
What is zero the balance?
300
A value that falls on the border between intervals of a histogram should be placed here.
What is in the "bin" to the right?
400
18,000 cm --> ~170 yd
18,000 cm x (1 in/2.54 cm) x (1 ft/12 in) x (1 yd/3 ft)
400
Substances in this state of matter do indeed have mass, despite most of them being invisible and relatively lightweight.
What are gases?
400
In this chapter's experiments, several groups recorded data showing changes in mass like "-0.02," "-0.01," or "+0.01." This slight deviations from zero can be explained by the ____ of the balance.
What is sensitivity?
400
As a sample of water freezes, its mass ______. Its volume, however, ______.
Remains the same; increases.
400
When making a histogram, it is very important to choose a ___ that best fits your data. If the right ___ is not used, it can skew the data, making trends hard to identify.
What is the scale or range?
500
15 mi/hr --> ____ km/s
See whiteboard.
500
To determine how much of a solid you have, it is best to find its ____. However, volume is typically the easiest way to measure liquids because _________________________.
Mass; they take the shape of their container.
500
One thing that we learned as a class from these experiments is that, in order to achieve the proper results, we need to minimize human error. What error likely accounted for experiment 2.1's skewed results?
Spilling salt and/or leaking water.
500
If three groups measure the same glass beaker, recording the values 29.80 g, 29.78 g, and 29.80 g, the beaker's mass should be reported as _____.
29.79 g
500
Make a histogram of the following data:
Change in mass: +0.07, 0, 0, -0.03, 0, -0.02, 0, 0, -0.02, -0.05