In this models of atoms and isotopes worksheet, students use marshmallow of different colors to represent the protons, neutrons and electrons in an atom. Students make models of the 3 isotopes of hydrogen. They draw a diagram of each and...

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.

For this mass worksheet, students determine the percentage composition of given compounds. Students write the empirical formula from the percentage composition. This worksheet has 5 problems to solve.

Class members use the provided worksheet to create a resume for one element from the periodic table. The activity teaches learners about all of the properties of elements and how to read the periodic table.

For this atomic structure worksheet, students select answers to 8 fill in the blank questions on subatomic particles from the drop down box.

In this periodic table worksheet, students complete a table of elements with their atomic number, atomic mass and symbol. They classify elements by their group name and distinguish between metals, nonmetals, and semi-metals. They also...

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.

Thirty multiple-choice questions and their answers are provided in this resource. It was written for a general chemistry course and queries test takers on scientific notation, mixtures, chemical symbols, electric charges, Dalton's atomic...

In this periodic table worksheet, learners write the chemical symbols for the given elements, compare atomic number and mass number, and describe the importance of valence electrons in the organization of the periodic table. This...

In this average atomic mass worksheet, students read about how the protons and neutrons make up the atomic mass of an element. They find the average atomic mass given four problems.

In this periodic table worksheet, students determine why the periodic table is organized the way it is and compare and contrast the characteristics of the different grouping of elements. This worksheet has 22 short answer and 36 fill in...

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 atoms worksheet, students use their knowledge of the periodic table and of atomic structure to complete the table on atoms. They identify the notation for each and then the atomic number, mass number, the number of protons,...

In this ion structure worksheet, students complete a table for ions using the notations provided. They must identify and complete the atomic number, mass number, number of protons, number of neutrons, and the number of electrons for each...

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.

Time to put the knowledge to the test! Young scholars take what they know about the periodic table and build their own from scratch. Using clues from 26 different elements, they place elements in a blank periodic table. The clues include...

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 atom worksheet, students review the subatomic particles, the scientists associated with the atomic theory, and the periodic table. This worksheet has 15 matching, 24 fill in the blank, and 11 short answer questions.

Guide first-time physical science learners through the periodic table of elements by having them record the atomic number, atomic mass, number of electrons, number of protons, number of neutrons, or the name of an element when given it's...

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 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, students review the periodic table and how the elements are organized in the periodic table. This worksheet has 5 short answer and 4 fill in the blank questions.

In this chemistry activity, students complete 29 fill in the bank questions about atoms based on the movie Exploring Atoms from the website www.brainpop.com .

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...