Students work as physicists to understand centripetal acceleration concepts. They also learn …
Students work as physicists to understand centripetal acceleration concepts. They also learn about a good robot design and the accelerometer sensor. They also learn about the relationship between centripetal acceleration and centripetal force governed by the radius between the motor and accelerometer and the amount of mass at the end of the robot's arm. Students graph and analyze data collected from an accelerometer, and learn to design robots with proper weight distribution across the robot for their robotic arms. Upon using a data logging program, they view their own data collected during the activity. By activity end , students understand how a change in radius or mass can affect the data obtained from the accelerometer through the plots generated from the data logging program. More specifically, students learn about the accuracy and precision of the accelerometer measurements from numerous trials.
This segment from Swift: Eyes through Time traces the history military officers …
This segment from Swift: Eyes through Time traces the history military officers and engineers discovering a strange phenomenon in the sky that astronomers now know are gamma-ray bursts.
In this lab exercise, students practice correctly using measurement tools, recording data, …
In this lab exercise, students practice correctly using measurement tools, recording data, calculating density, using significant figures, and exploring the concepts of accuracy and precision.
This unit of investigation is introduced using the anchoring phenomenon of a …
This unit of investigation is introduced using the anchoring phenomenon of a rocket launch. Students investigate the concepts of what is fuel, why some materials react and others do not, the role energy plays in the rearrangement of atoms, and where does the energy to do this come from and finally what makes the rocket lift off if fire itself is not causing this.
In this activity, students explore the effect of chemical erosion on statues …
In this activity, students explore the effect of chemical erosion on statues and monuments. They use chalk to see what happens when limestone is placed in liquids with different pH values. They also learn several things that engineers are doing to reduce the effects of acid rain.
How do strong and weak acids differ? Use lab tools on your …
How do strong and weak acids differ? Use lab tools on your computer to find out! Dip the paper or the probe into solution to measure the pH, or put in the electrodes to measure the conductivity. Then see how concentration and strength affect pH. Can a weak acid solution have the same pH as a strong acid solution?
In this activity, students use the virtual lab to create 500mL of …
In this activity, students use the virtual lab to create 500mL of 3M HCl solution from a concentrated stock solution of 11.6M HCl. They must first calculate the correct volumes of 11.6M HCl solution and water to mix together to create the final solution. Next, they prepare the solution using the appropriate glassware, and then can check their answer using the concentration viewer in the solution info panel.
In this field-based exercise, students were given a tour of an abandoned …
In this field-based exercise, students were given a tour of an abandoned mine site and asked to utilize a set of field measurements to describe the spatial details of metal transport. This drew on previous experience with field measurements and prompted them to work together to solve an observed chemical evolution of a contaminated brook. The exercise is an excellent example for students to bring together acid-base chemistry, redox chemistry, and thermodynamic concepts together to describe a reasonably complex system. The field component was completed in a full day, but we will be expanding this next fall for a 2 day exercise (weekend). The exercise was coupled with subsequent labs to complete analysis of the water samples and accomplish speciation calculations using PHREEQCI.
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Intended Audience: This activity was used for an introductory Geochemistry class, which …
Intended Audience: This activity was used for an introductory Geochemistry class, which contained students from sophomore level to master's students. We took the trip in mid-October, about as late as possible in Vermont, after they had gained some previous field experience and lab work in addition to an in introduction to these principles in class.
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Students conduct a simple experiment to model and explore the harmful effects …
Students conduct a simple experiment to model and explore the harmful effects of acid rain (vinegar) on living (green leaf and eggshell) and non-living (paper clip) objects.
Cluster of questions on acid rain deposition. (Note: this resource was added …
Cluster of questions on acid rain deposition.
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Students are introduced to the differences between acids and bases and how …
Students are introduced to the differences between acids and bases and how to use indicators, such as pH paper and red cabbage juice, to distinguish between them.
Students research the acidification of freshwater streams and lakes, identify at least …
Students research the acidification of freshwater streams and lakes, identify at least one of the sources, and determine how their daily activities contribute to the problem.
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The most important property of carboxylic acids, an the one that is …
The most important property of carboxylic acids, an the one that is responsible for naming them such, is their acidity. An acid is any compound that donates a hydrogen ion (H+, also called a proton) to another compound, termed a base. Carboxylic acids to this much more readily than most other classes of organic compounds, so they are said to be stronger acids, even though they are much weaker than the most important mineral acids -- sulfuric acid (H2SO4), nitric acid (HNO3), and hydrochloric acid (HCl).
This module provides an intrioduction to acid and base chemistry. The Arrhenius …
This module provides an intrioduction to acid and base chemistry. The Arrhenius and Bronsted-Lowry concepts of acids and bases are discussed as well as the pH scale and neutralization reactions.
This is a pdf of a presentation. It can be used to …
This is a pdf of a presentation. It can be used to expand upon or introduce the topic of Acids and Bases within chemistry. It primarily goes over the basics but could be used at any point.
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