In this elements and bonding worksheet, students classify given elements, they identify valence electrons in atoms, they explain the reactivity of elements, and they explain why certain atoms gain electrons while others lose electrons.

An online resource, this worksheet has your chemistry learners complete four data tables with information about atoms and chemical bonds. The first table addresses atomic number and mass, as well as numbers of protons, neutrons, and...

Science teams make models of four different hydrocarbon compounds that we commonly use for fuel. Then they demonstrate chemical reactions that result when energy is produced. This can be used as an enrichment when your class is studying...

Although their name makes them sound dangerous or toxic, carboxylic acids are found throughout nature in things such as citric acid, vinegar, and even in your DNA. Through detailed readings, discussions, and answering questions...

A 12-page midterm exam sample can be given to young scientists in preparation for an exam. This particular installment is geared toward a class that delves into both ecology and chemistry concepts. There is no way to separate the 50...

For this chemistry worksheet, learners complete each of the bonds listed. They draw the Lewis structures for each atom and show the transfer of electrons and charge for each ion. Students also draw the Lewis structures for each atom and...

For this hydrogen bonds worksheet, students create three graphs for comparison using three data tables showing the boiling points for various compounds containing hydrogen.

In this chemical reactions worksheet, students experiment with hydrochloric acid and copper (I) chloride to identify the types of reactions they undergo with various other substances. They also observe the law of conservation of mass and...

Here is a copy of a past national challenge exam that you can use in your general chemistry course as a unit or semester review. Sixty multiple-choice questions query learners on properties of matter, stoichiometry, reactions, and...

As to be expected from the American Chemical Society Olympiad Examinations Task Force, this 60-question test tops the charts in terms of excellence. It consists entirely of multiple choice questions designed to assess a year's worth of...

In this chemical compounds worksheet, young scholars draw the Lewis structure and "cloud" structures for given compounds. Then students match the Lewis structure with the correct cloud diagrams. This worksheet has 2 problems to solve.

In this reading comprehension worksheet, students read several short paragraphs about compounds and elements and then answer several questions about the text.

In this formulas activity, students use the cross-over rule to determine the formula for compounds of the elements and polyatomic ions given. Students complete 15 problems.

There are two sheets here, with 100 problems total. The first half is a list of compounds, and your young chemists should write the chemical formula for each.  The next fifty give the formula and the name is required.  You...

In this bonding worksheet, students read about the octet rule in bonding, ion notation, ionic bonds, covalent bonds and oxidation numbers. Students write 2 ion notations, they determine if 8 sets of ions will make compounds, they draw 2...

In this chemical bonding worksheet, students review the three types of compounds: ionic, covalent, and polyatomic. Students practice drawing the covalent bonds of given compounds. This worksheet has 5 drawings and 13 fill in the blank...

In this chemical bonds worksheet, students review the different types of bonds, Lewis dot structures, ions, and molecule shapes. This worksheet has 10 matching, 17 multiple choice, and 3 drawing questions.

In this bonding worksheet, students read about the two different types of chemical bonding: ionic and covalent bonds. Students review ion notation and oxidation numbers. This worksheet has 24 fill in the blank, 2 drawings, and 4 short...

In this covalent and ionic substances worksheet, students use the internet to find information about the characteristics of covalent and ionic substance and explain what causes the differences in these types of substances.

In this ionic compounds worksheet, students complete two tables with the chemical formulas given the cations and anions that bond.

In this photosynthesis, disease and Immune System worksheet, students fill in the blanks with key terms to complete sentences about the transfer of energy from the sun to plants, enzymes as catalysts in reactions, homeostasis, the immune...

In this chemical formulas worksheet, students determine the number and type of each atom and the total number of atoms for the given formulas. Students complete 10 problems.

In this chemical compounds worksheet, students review the different types of bonding, define the octet rule, and draw Lewis structures (electron-dot diagrams) for given compounds. This worksheet has 7 fill in the blank, 5 short answer...

In this chemical compounds worksheet, learners identify the types of intermolecular forces present in the given substances, calculate the heat required to convert a liquid to gas, and explain the ideal-gas law. This worksheet has 5...