In this history of the atom instructional activity, students answer questions about Thomson's cathode ray apparatus, Rutherford's gold foil experiment and Dalton's beliefs about the atom. Students identify the number of protons, neutrons...

In this moles worksheet, students read about mass, formula mass and moles. They calculate the masses of given numbers of moles of compounds and they calculate the number of moles of given masses of compounds.

Here is a six-page exploration that will spark interest in the periodic table of elements. After reading a diagram-supported explanation of the periodic table's organization, pupils answer questions to familiarize themselves with it. To...

On this physics handout, pupils read about the Hadron Collider used to make new sub-atomic particles by accelerating protons. They solve 6 math problems that include translating electron volts to Joules. This is geared toward high school...

In this atomic number and mass quiz worksheet, students complete an on-line quiz, clicking on questions and matching answers, scoring 1 point for each correct answer. A printed version is available.

For this neutral atoms worksheet, learners identify various neutral atoms found on the periodic table. They determine the number of protons, neutrons, and electrons for each neutral atom listed on the sheet. Students also identify that Z...

In this molecules worksheet, students review the parts of an atom and use element mass to determine isotopes. Students give the group, period, and classification for the given elements. This worksheet has 6 short answer questions and 17...

In this moles learning exercise, learners read about mole and learn how to calculate the number of moles in specific mass of compounds. This learning exercise has 14 problems to solve.

In this atoms worksheet, students complete 58 questions about the atomic radius of atoms, the ionization energy, the valence electrons, metals, non-metals and semi-metals and the families of elements.

In this atom worksheet, high schoolers read about Dalton's contributions to the structure of the atom. They answer five questions about Dalton's ideas, the law of multiple proportions and the law of definite proportions.

In this minerals and rocks worksheet, students answer questions about the chemistry of minerals, scratch tests, rocks and the rock cycle, and erosion and deposition.

In this elements worksheet, learners fill in a periodic table with the element symbols, mass numbers, and proton numbers of the elements that are missing.

In this isotopes, molecular notation, and electron orbits worksheet, students read selections pertaining to isotopes, mass number, molecular notation, electric attraction, and electron orbits. In addition, students complete 11 short...

In this chemistry review worksheet, students review terms and concepts covered. Students practice metric conversions, factor labeling, temperature conversions, heat calculations, atomic structure, and gas laws. This worksheet has 3...

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 elements instructional activity, students match the 12 terms with the appropriate definition. Students review vocabulary such as proton, electron, atomic number, and atomic mass.

In this elements and ions worksheet, students complete a table given an element, the symbol, or the number of subatomic particles and they must complete the rest of the table. The do the same for five ions. They also write formulas and...

Because of the work of John Dalton, we are able to write formulas for compounds. The hands-on experiment has scholars prepare a compound from its elements. Using mass data, individuals write the empirical formula for the compound.

In this atoms worksheet, students circle the term in parentheses that makes the 20 statements correct. The statements review the parts of an atom, isotopes, and basic matter principles.

In this chemistry worksheet, students identify and write how many significant figures they would use for each problem. Then they round the answers to the appropriate number of significant figures. Finally, students calculate the mass of...

In this periodic table instructional activity, students use the list of coded letters and clues that correspond to the represented elements in the first four periods of the periodic table to complete the chart at the bottom of the sheet....

In this chemistry worksheet, students locate and identify various vocabulary terms related to chemistry. There are nine words/phrases located in the puzzle to find.

In this atoms worksheet, students give the atomic symbol or the name of given atoms. Students practice converting measurements, expressing answers to the proper number of significant figures. This worksheet has 2 fill in the blank and 2...

In this moles worksheet, students practice calculating the number of moles based on grams of a compound. Students use the rate of reaction equation to determine the rates of specific reactions. This worksheet has 10 problems to solve.