The third instructional activity in a series of 11 begins by using thermal decomposition of potassium chlorate to determine the mass percent of oxygen. Then a second activity allows scholars to demonstrate that the resulting residue is...

Here are the instructions for leading your advanced chemists though the process of measuring the nonvolatile components in a sample of paint. No student handout is provided, so you may want to create one based on the procedure explained....

In this parts per hundred activity, students read about describing components of a population by parts per a given number such as 100, 100 or 1 million. Students are given 6 problems to calculate the parts per hundred for each sample given.

Recycled Russian nuclear weapons provide 10 percent of the nuclear energy that the United States uses. The short presentation discusses the Teller-Ulam device. It provides a diagram of the parts as well as a description of the four...

A simple activity goes a long way in demonstrating the property of porosity to your rock hounds. They will mass a specimen of dry sandstone and then soak it in a pre-measured amount of water. After seven minutes, they once again measure...

More than 90 percent of the people in a building have come down with an illness, and it is your job to investigate. Teachers give scientists the data needed to decide what is important and how they can solve the mystery....

Most scholars associate density with floating, but how do scientists determine the exact density of an unknown liquid? The third lesson in a seven-part series challenges scholars to find the mass and volume of two unknown liquids. Each...

After removing the shell from a raw egg, cell biologists soak the egg in either a hypotonic, hypertonic, or isotonic corn syrup solution. They calculate the percent change in mass and compare it to the strength of the solution in a...

Food takes a trip to the table. Class members choose a meal from a menu and calculate the total cost of the meal including tax and tip. Using a food origin card, pupils determine how far each of the ingredients of a meal traveled to end...

In this enthalpy of reactions learning exercise, students use a known amount of copper (II) sulphate solution and an excess of zinc powder to calculate the reaction's enthalpy change. Students measure the temperature change throughout...

Do you have mole problems? If so, call Avogadro at 602-2140. The instructional activity starts with pupils working independently to solve for molar mass of ionic compounds. Then they learn to solve for percent composition and later...

It's the moment of truth. Previous lessons in the 24-part series had scholars design and develop shampoo formulas using chemical concepts. The 18th lesson plan asks them to test the function of their shampoos. To do this, they calculate...

Turn aluminum cans into pickles! An engaging experiment has learners chemically change aluminum into a substance with many purposes including the manufacture of pickles. After performing the chemical conversion, the experimenters verify...

Estimating Errors in Chemistry is a detailed handout that illustrates the importance of calculating the percent error when working in the chemistry lab. There are no actual problems to solve, just notes and examples of calculations. Hand...

Time to come clean! Scholars continue preparing the shampoo they created in the previous two lessons. The purpose of this stage is to calculate the perfect amount of additive to make the shampoo lather. 

Pupils use fractions to find the weight of fish. They use percentages to determine the correct amount to feed them. They organize their data into a graph and shares with the class.

In this percent composition worksheet, students calculate the percent composition of compounds using their formula masses and masses of individual elements. They solve nine problems including calculating percent composition, finding...

Students explore satellite data. In this technology cross-curriculum math and world geography lesson, students locate specific map areas using a microset of satellite data. Students use technology and math skills to determine percentages...

In this chemistry olympiad laboratory worksheet, learners design and carry out two experiments. They design one experiment to test for the percent mass of a substance in a solution and they design another experiment to identify two...

This hybrid worksheet connects mathematics to a science class. Learners practice solving problems that involve making a variety of conversions. An assortment of questions hits all the calculations needed for a middle school or beginning...

Thirty percent of energy used by schools is used inefficiently! Part two in the series of 12 has groups perform energy audits of their schools as part of the Cool Schools Challenge. Each group is assigned a specific room, performs the...

Which pulley system will give us a whale of a good time? Teams compare the theoretical and actual mechanical advantages of different pulley systems. They then form a recommendation for how to move a whale from an aquarium back to the ocean.

Which modification is the best? Using the scientific method, pairs determine the effects of each control surface on the distance of a glider's flight. The activity, section 16 in a 22-part unit on aviation, allows pupils to gain a better...

Most appropriate if you are applying the entire unit to build a rain garden at your school, this installment involves calculating the area that will drain into it. Your garden planners will need data from previous lessons, so this one...