This resource provides a physical reaction. Hydrous and anhydrous calcium chloride react with water to produce physical exothermic and endothermic reactions.

An early astronaut's experiences teach students that Newton's third law of motion-for every action, there is an equal and opposite reaction-applies both on Earth and in outer space.

The goal of this activity is to develop and use a model to describe that matter is made of particles on a scale that is too small to be seen. You will be making observations of changes supported by a particle model of matter.

Students can use an O2 Gas Sensor to measure the amount of O2 produced when H2O2 is broken down by the enzyme catalase at different concentrations, pH values, and temperatures. They will also measure the enzyme's initial reaction rates.

Two complete tutorials on momentum and its conservation. Tutorials include informational text, interactive activities, animations, and quick, interactive comprehension checks throughout the lessons.

An excellent essay from the National Humanities Center that explores the civil rights movement after the groundbreaking legislation in the 1960s. It looks at how the civil rights movement has transitioned in the last part of the 20th and...

This lesson introduces the concept of action and reaction forces and explains how they can be observed. It is 1 of 2 in the series titled "Interaction Between Objects."

[Free Registration/Login may be required to access all resource tools.] Newton's Third Law of Motion - action and reaction forces and why they are not balanced forces.

This excellent recounting of the days that led up the Boston Massacre and the massacre itself fills in a lot of information that is lacking in textbooks because of space contraints. Read about the British soldiers' and the colonists'...

In addition to defining "Allergic reaction" or "Anaphylactic shock," this website includes steps on assessing and managing allergic reactions and their symptoms. Includes a link to information on shock and the "Priority Action Plan,"...

Acitivity in which students examine the controversy surrounding John Scopes resulting in the 1920s Scopes Monkey Trial. Using guidelines provided, students write an essay on a topic of their choice explaining how it relates to change and...

Students construct a rocket from a balloon propelled along a guide string. They use this model to learn about Newton's three laws of motion, examining the effect of different forces on the motion of the rocket.

This site, which is provided by NASA, gives some scientific history and a clear and detailed explanation of nulcear forces and nuclear fusion.

There is a simple chemical test that you can do to detect starch, which involves an iodine solution. The iodine solution turns any food that contains starch dark blue. Try this activity and watch it in action yourself.

Use this outline to find out about Newton's Laws of Motion. Use the different lesson plans covering the laws of motion to learn more.

Match stick rockets makes a great demonstrations to show students Newton's third law. By covering a match with tin foil, students can see the reaction thrust as the molecules escaping the matchstick are propelled into the air. Lesson...

Students discover Newton's Third Law of Motion by constructing a rocket car.

[Free Registration/Login Required] Simulate the launch of a rocket to see how rocket propulsion works. After the activity, answer a challenge question to check for understanding.

In this elementary physics investigation, students explore Newton's 3rd Law of Motion: To every action there is an equal & opposite reaction. Pairs of students will line up 5 pennies, (touching each other), between 2 rulers. The row...

[Free Registration/Login may be required to access all resource tools.] Understand why for every action there is an equal and opposite reaction.

In this physics lab (best done outside), students will explore Newton's Third Law - 'For every action there is an equal and opposite reaction'. Students will fill empty 35-mm film canisters with water and part of an Alka-Seltzer tablet,...

An insightful documentary [1:21:00] of the events leading up to the assassination of Martin L. King by James Earl Ray, and the escape and arrest of the killer. The turbulent political and social background of the time is made clear as is...

Students are introduced to Newton's third law of motion, and then learn that engineers apply Newton's third law and an understanding of reaction forces when designing a wide range of creations, from rockets and aircraft to door knobs,...

Outstanding information (and a lot of it) on gas turbine (jet) engines. Describes the history behind their development and the theory behind their operation. Well written and includes very informative graphics.