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.
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Law of Large Numbers - Hospital
Students explore concepts of probability and independent events. They develop a formula for deviation percentage.
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Atomic Number and Mass
In this atomic number and mass quiz learning exercise, students complete an on-line quiz, clicking on questions and matching answers, scoring 1 point for each correct answer. A printed version is available.
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Trends in the Periodic Table
For this trends in the periodic table worksheet, high schoolers plot the ionization energy vs. atomic number and they plot atomic radius vs. atomic number of the first 20 elements. Students analyze their graphs and answer questions about...
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I Am Golden
Middle schoolers become familiar with patterns, the Fibonacci Sequence, and the Golden Ratio. They see how many places these occur. They have practical applications for using the calculator and making charts to extend patterns.
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Atom Basics Review Sheet
In this atom activity, students fill in three charts using the periodic table to identify atomic number, atomic mass, number of subatomic particles and the element's symbols. Students draw an atom and it's subatomic particles as well as...
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How to Balance Equations for Oxidation-Reduction Reactions
For this balancing oxidation-reduction reactions, students learn how to assign oxidation numbers to atoms in compounds, they learn how to write half reactions in order to balance oxidation-reduction reactions in acidic or neutral...
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Naming Binary Compounds
In this naming binary compounds learning exercise, high schoolers are given 8 pairs of ions and they identify their oxidation numbers, their formula when the combine and the name of the compound. They are given 8 formulas and they...
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Finding the Oxidation State
In this oxidation state learning exercise, students are given rules for assigning oxidation numbers and a chart showing the oxidation states of the elements of a given compound. Students use the rules and the example to find the...
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Masses of Atoms
In this masses of atoms worksheet, students complete a chart of 7 isotopes with their isotope symbol, atomic mass, atomic number, and the number of protons, neutrons and electrons. They calculate the average atomic mass of two elements.
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Introduction to the Periodic Table
In this periodic table worksheet, students will label the atomic number, atomic mass, element name, and element symbol for oxygen. Then students will determine the characteristics of the different groups of elements on the periodic table...
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Electrons, Protons, Neutrons
In this atoms worksheet, students complete a graphic organizer by writing in the element symbol, atomic number, mass number, and number of electrons, protons, and neutrons. This worksheet has 1 graphic organizer and 14 short answer...
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How is the Periodic Table Arranged?
In this periodic table worksheet, students fill in a portion of the periodic table with the atomic number of the element, the electron configuration of the element, the number of shells and the number of outer shell electrons. They...
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The Modern Atom
In this modern atom worksheet, students answer 7 questions about electron configurations of atoms, flame tests, spectroscopy, the energy of electrons and quantum numbers. Students write electron configurations and orbital filling diagrams.
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Why are Electrons Important?
Students write electron configuration of elements using atomic numbers and they identify valence electrons. For this electrons lesson plan, students observe a demonstration showing the space-filling property of an electron. They also...
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Naming Ionic Compounds
In this naming ionic compounds instructional activity, students write the chemical name of 8 ionic compounds given their formulas. They include the Roman numerals for compounds with variable oxidation numbers. Students also write the...
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Electron Configuration and Quantum Mechanics
In this electron configuration and quantum mechanics learning exercise, students identify the 4 symbols for quantum numbers, they complete an electron filling diagram, they complete orbital diagrams for 8 elements and they write the...
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Electronic Structure of Atoms
In this chemistry instructional activity, students complete 22 problems and fill in the blank questions on quantum numbers, electron configuration and hybridization of orbitals.
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Atom Basics Test
Simple in format and standard in content, this resource is an assessment of your beginning chemists' grasp of the atom. Using a periodic table of elements, they fill in a chart of missing chemical formulas, atomic masses, and numbers of...
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Periodic Table And Its Trends - Day 4
Guide your chemistry class through the periodic table so that they are able to identify atomic radii, electronegativity, and ionization energy. Give them three metals to place in water to observe reactivity. Teach them to write electron...
Curated OER
Teaching Atomic Structure Using Cooperative Learning
Individuals in a group of four each take on a different role: atomic number expert, mass number expert, isotope expert, and nuclear atom expert. They teach each other about their area of expertise. As an assessment, a short quiz is...
Curated OER
Defining the Atom
Words, words, words! This presentation uses plenty of them to define the atom, outline the history of what we know about atoms, and explain atomic and mass numbers. That's all! Informative, but not interesting, this slide show would be...
Curated OER
Numbers as Descriptors
Students use numbers as descriptors. In this mathematical inquiry instructional activity, students use numbers to describe, classify, and compare plants. Students are made aware that numbers can be used to describe things in the world...
Virginia Department of Education
The Modern Model of Atomic Structure
The difference between atomic mass and atomic number can be confusing for some young chemists. Help your class better understand the concepts by allowing them to sketch an atom on paper and then discuss their experience. Upon completion...
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