In this balancing chemical reactions worksheet, students balance equations, identify electrons gained or lost in atoms and identify the number of atoms of each element for the reactants and products in equations. They also answer 3...

Learners explore oxygen and its physical and chemical propeties.  In this investigative instructional activity students complete several experiments using oxygen.

In this chemistry learning exercise, students examine the energy rule of moles and answer the essay questions. The answers are include with the learning exercise.

In this word search activity, learners locate 20 words related to science. The word list includes volume, mixture, and solute.

In this 9th grade science review learning exercise, students complete 63 true or false questions on topics such as atomic notation, isotopes, covalent bonds, Ohm's law, and electric circuits.

High schoolers study energy generation by the Sun, which involves atoms and nuclei.

Students use M&Ms to simulate radioactive decay of elements.

Students explain how an element can be identified using emission spectra. They relate the emission spectrum of hydrogen to its absorption spectrum and identify hydrogen absorption lines in the spectrum of stars.

In this chemistry review activity, students give atomic symbols for given atoms, calculate moles, determine empirical formulas, and balance chemical equations. This activity has 1 drawing, 9 fill in the blank, and 12 word problems.

In this reaction worksheet, learners assign the oxidation numbers to all the atoms in the given compounds and ions. Students determine whether an element is oxidized or reduced in the given reactions. This worksheet has 4 problems to solve.

In this AP Chemistry worksheet, students apply concepts of electron configuration to accurately answer the questions provided. Students also draw Lewis structures of the given elements. Students estimate the enthalpy of formation as well...

In this science vocabulary worksheet, students solve the clues with science vocabulary words and find the words in the maze. Students find 14 science words.

Students watch a video segment and read text about the color of fireworks. Students watch a video segment and do an interactive activity on the mechanics of a firework.

Students watch a video segment and read text about the color of fireworks. Students watch a video segment and do an interactive activity on the mechanics of a firework.

Students watch a video segment and read text about the color of fireworks. Students watch a video segment and do an interactive activity on the mechanics of a firework.

Students read the Who We Are Section on Calfee Designs Webpage and discuss carbon usage. They work in pairs to look up the minerals diamond and graphite then create a chart on the properties of each mineral then compare how they differ...

For this word search worksheet, students locate 12 words related to molecular bonding. Words include molecule, ions, forces, polarity, partial, and particles.

Eighth graders interpret the chemical symbols and shorthand used for molecules and equations. Through guided practice, 8th graders work to decipher and interpret the symbols for chemical equations. An opportunity for independent...

Students examine the structure of molecules, their formula, and percentage composition of each element in the compound. They construct an organic compound with different functional groups using a modeling kit, and draw a 3-D structure...

Students generate a radioactive decay table for an imaginary element, use their data to plot a decay graph, develop the concept of half-life, and use the graph to "age" several samples.

In this radioactivity activity, students write the mass number and atomic number for the missing element in the reactions. Students identify the isotope that is more stable and determine the half-life of the isotope. This activity has 10...

For this stoichiometry worksheet, learners identify types of reactions, show the products, and balance the equations. Students determine the limiting reagent, theoretical yield, and percent yield for given reactions. This worksheet has 5...

For this compounds worksheet, students compare the differences between compounds and mixtures. This worksheet has 3 short answer questions.

In this carbon worksheet, students follow directions and use marshmallows and toothpicks to made carbon dioxide and glucose molecules. Students do this to see how carbon changes as a result of photosynthesis.