Molecular element vs atomic element
[DOC File]Chemistry 2011-2012
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SC2c. Apply concepts of the mole and Avogadro’s number to conceptualize and calculate • Empirical/molecular formulas, • Mass, moles and molecules relationships, • Molar volumes of gases. SC3 Students will use the modern atomic theory to explain the characteristics of atoms. SC3a.
[DOC File]Summary of Properties of Elements in The Periodic Table
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EN ( Bond polarity ( Molecular polarity ( Intermolecular forces Solubility. Reactivity. Characteristics of Chemical Bond. Chemical bonds are forces that hold atoms (or ions) together in an element or compound. The type of bonds, bond properties, bond strength, and the number of bonds determine the chemical behavior of the compound.
[DOC File]STUDY GUIDE: BASIC CHEMISTRY
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1. Describe atomic structure using the terms proton, neutron, electron, mass number and orbital. Indicate what is meant by electrons in an "excited state" and those in a "ground state" 2. Explain what an isotope is and give two important physical properties of isotopes that make them useful in biological research. Define half-life. 3.
[DOC File]Chemistry 101L
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Atomic Radius. In an element, this is one-half of the distance between nuclei. In a compound, the sum of the atomic radii for bonded atoms must equal the distance between their nuclei. The space between bonded atoms is divided between the two atomic radii by a combination of experiment and theory to find the atomic radius of each atom. Atomic Size.
[DOCX File]General Chemistry I Learning Outcomes
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Explain how and why the atomic-molecular structure affects the properties of a substance, and vice versa. Predict and explain the energy changes associated with interactions of atoms, molecules, and ions. How to apply systems thinking to both molecular level and macroscopic systems. Identify common types of reactions and predict the products.
[DOC File]FLAME TEST AND ATOMIC SPECTRA LAB
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The chemistry of an element strongly depends on the arrangement of the electrons. Electrons in an atom are normally found in the lowest energy level called the ground state. However, they can be "excited" to a higher energy level if given the right amount of energy, usually in the form of heat or electricity. ... Part Two: Atomic Spectra ...
[DOC File]Atom The smallest part of an element that can exist on its own
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Total % composition = Relative atomic mass RAM. Molecular ion peak (The molecular ion peak is not always the most intense and maybe absent) Highest significant peak where the molecule has lost 1 electron but has not broken up. Base peak. Highest peak in the mass spectrum - If the sample is an element each line represents an isotope of the element
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Technetium (atomic number= 43), Polonium (atomic number= 84) and any element higher are always radioactive. Sometimes an element which is normally stable has a certain isotope that is radioactive called a radioisotope. Many times these radioisotopes are high neutron isotopes (ex. C-12 is not radioactive, C-14 is radioactive).
[DOC File]AP Chemistry: Course Introduction Sheet
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5. use the periodic table to predict whether an element is a metal, nonmetal or a metalloid. 6. write the names and formulas of ionic compounds, molecular/covalent compounds and acids. 7. calculate the atomic weight of an element given the abundances and masses of its isotopes. 8.
[DOC File]1973 D
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(d) (i) copper; since the atomic mass of an element is the weighted average of its natural isotopes, then the atomic mass of the element must be between 62.93 and 64.94. (ii) 62.93; the isotope that is closer to the atom mass of the element is more abundant of the two (63.546 – 62.93 = 0.616; 64.94 – 63.546 = 1.384) 2006 D Required
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