Curated OER
Understanding Oxidation Numbers
Students review atomic numbers, positive and negative charges, and the periodic table. They examine the relationships among protons and electrons, location of various elements, electron energy levels, and oxidation numbers.
Curated OER
Stoichiometry
In this stoichiometry learning exercise, students review definitions and equations associated with molarity, density, atomic mass, molarity, and dilutions. This learning exercise has 18 word problems.
Curated OER
The Moon's Atmosphere
For this moon's atmosphere worksheet, students read about the tenuous lunar atmosphere and solve 4 problems. They find the density of helium particles, they find the grams of given atoms in the moon's atmosphere and they find the volume...
Curated OER
Making Atoms
In this atoms worksheet, students determine an atoms based on its protons, and neutrons. Students determine the electron levels for the oxygen atom. This worksheet has 1 multiple choice, 4 fill in the blank, and 13 short answer questions.
Curated OER
Isotopes; Molecular Notation; Electron Orbits
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...
Curated OER
Chemical Reaction
In this chemical reaction worksheet, students label the missing particles as natural decay, induced, fission, or fusion. Students calculate the energy change for the given reactions. This worksheet has 6 fill in the blank and 4 problems...
Curated OER
The Mole
Students explore the concent of using the mole to solve problems related to counts small particles of matter. Students work individually and in groups to complete conversions of substances from moles to matter.
Curated OER
Periodic Table & Its Trends-Day 1
Students are introduced to the periodic table. They find the common trends among the electron configurations and the names of certain groups of the table. Students explore the atomic mass, atomic number, mass number, mass and charge...
Curated OER
Periodic Table & Its Trends
Students review atomic structure and then participate in a activity in which they categorize several "elements" into some form of order based on their properties. They discuss the trends they see. They also practice several electron...
Curated OER
Uranium On a Diet
Students examine how nuclear reactions differ from other chemical reactions they have studied. They add up atomic masses of both the product and reactant side of an example of uranium decomposition, demonstrating mass loss involved.
Curated OER
Causal Patterns in Density Phenomena
Learners consider the causes of density at a microscopic level. They then discover that one cause of density has to do with how many protons and neutrons the material contains.
Curated OER
Formula Units
In this chemistry worksheet, students examine the concepts of mole and molarity in order to apply in the laboratory setting. The sheet includes in depth background information.
Science Geek
Stoichiometry
Watch your class react when you tell them they're going to study stoichiometry! The lesson demonstrates four examples. Scholars must write and balance the chemical equation and then make the conversion to find the correct mass or volume....
Science Geek
The Mole
What can you call a tooth in a glass of water? A one-molar solution! Presentation covers moles, Avogadro's Number, calculating formula mass, converting moles to grams, converting grams to moles, and calculations with moles. It is the...
Curated OER
Isotopes and Ions
Students examine the concepts of isotopes and atoms. In this powerpoint lesson, students see the balance in numbers of protons, neutrons, and electrons create isotopes and ions of certain atoms.
Curated OER
Science Quiz-General Knowledge
In this science quiz worksheet, students complete a set of 20 true or false questions covering a variety of general science topics. An answer key is included.