In this 9th grade science review worksheet, 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.

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

Young scholars 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.

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

In this reaction worksheet, students 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.

For 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...

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...

In 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...

High schoolers 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...

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 worksheet, 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 worksheet has...

In this stoichiometry worksheet, students 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...

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

In this carbon activity, 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.

In this science vocabulary instructional activity, students solve the clues and insert the words into a crossword. Students insert 8 science words into the crossword.

In this chemistry terminology worksheet, students review and discuss nineteen terms associated with chemistry and then locate and circle each term in a word search puzzle.

In this properties of water worksheet, students complete 11 fill in the blank and 5 matching questions about surface tension, water hardness and water trivia.

In this chemistry activity, students determine the number of water molecules is a given volume of water. Students determine the empirical formula for given compounds from the percentage mass of elements. This activity has 20 problems to...