From their sweat to the water vapor in their breath, astronauts recycle every possible drop of water while in space. After watching a short video describing the different ways materials are recycled and reused in space...

Cranberries, oysters, lobster, deer, and cabbage were just a few of the foods found on the table at the First Thanksgiving. After reading a two-page passage about the historic meal, class members respond to 10 reading...

Use chemistry to change pennies into gold coins! The experimental procedure leads learners through the process of changing copper pennies to silver and then to gold. They record the mass of each coin through every step of the experiment.

In an electrolytic cell, electrical energy is converted into chemical energy, the exact opposite of a battery! Lesson 15 in a series of 36 explores electrochemistry. Participants begin by reading and discussing oxidation/reduction...

In this chemistry worksheet, students determine the pH of several given solutions. Students label indicated substances as either acids or bases according to Bronsted-Lowry theory.

In this chemistry review worksheet, students answer and solve 95 questions about chemical reactions, hydrocarbons, functional groups, moles, acids and bases and solutions.

In this Archimedes' principle worksheet, students answer 13 questions about the concepts of Archimedes' principle such as water displacement, buoyancy and force. The answer questions from a lab they did in class to simulate Archimedes'...

In this redox activity, students balance 6 equations that involve acids and bases. They balanced oxidized and reduced compounds as well as their oxidizing and reducing agents.

In this genetics worksheet, students describe how to tell the difference between DNA, RNA, and proteins. Students also learn about the processes of transcription and translation. This worksheet has 3 short answer and 3 fill in the blank...

How well do your pupils understand DNA, mRNA, and amino acids? This three-page handout will help you assess their comprehension through sequencing questions, fill in the blanks, and labeling diagrams.

In this electrolytes and solubility worksheet, students answer questions about electrolytes and write balanced equations for the dissociation of salts in water. They also determine solutes that are soluble in water and write balanced...

In this pH worksheet, students describe the pH scale and explain the initials "pH." Students classify solutions as acidic, neutral, or basic. Students name compounds as acids or bases. This worksheet has 3 short answer questions and 5...

For this buffer solution worksheet, high schoolers experiment with the addition of different solutions to a buffer solution and observe the changes in pH using a pH probe. Students describe the differences between adding pure water and...

In this chemical reactions worksheet, students by comparing the chemical reactions of baking soda and baking powder. This worksheet has a graphic organizer and 7 short answer questions.

National Chemistry Olympiad tests are released after their use each year, since they cannot use them again for this event. The result: outstanding comprehensive assessment resources for general chemistry classes! This 2005 version covers...

This 60-question comprehensive exam was designed to determine who would go on to compete in the 2000 US National Chemistry Olympiad. Hopefuls answer multiple choice questions regarding all chemistry topics taught in the first year...

In this acid-base reaction instructional activity, learners calculate the ion concentration and pH for 6 solutions, graph titration results for 11 reactions and use Henderson-Hasselbach equations for three problems.

Radioactive decay, pH, properties of elements, organic compounds, and stoichiometry are all touched upon through this practice chemistry exam. It always helps learners to take a practice test in preparation for the actual exam. This...

In this fluids, electrolytes, and acid-bas balance system study questions, students define 12 words associated with this system. They answer 12 short answer questions about the components of the acid-balance system.

For this genetics worksheet, students compare the human amino acid sequence with the five animals given. Students used cladograms to complete 11 short answer questions.

In this protein code worksheet, learners are given a table of "Secret Pseudo-Protein Codes". They use the table to decode a DNA sequence and then encode an RNA sequence. They answer questions about the Secret Pseudo-Protein code.

For this DNA worksheet, students compare the DNA sequence of a human and a cow to complete 4 fill in the blank questions and 4 short answer questions.

In this protein synthesis worksheet, students identify the proper amino acids given the mRNA codons. They also identify the mRNA codon given the DNA code and the amino acid it codes for. Students answer questions about protein synthesis.

For this protein synthesis worksheet, high schoolers complete 17 questions about making proteins through the process of transcription and translation. They use a sample of DNA to make a protein using a given tRNA dictionary.