| Fundamentals of Chemistry | Atomic Theory and Nuclear Chemistry | Electron Configurations | The Periodic Table | Ionic Bonding |
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What is chemistry defined as?
The study of the composition, structure, and properties of matter, the changes it undergoes, including energy changes.
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What is a chemical reaction?
Transformation of a substance(s) into one or more new substances.
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What does a short wavelength have?
High frequency and high energy.
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Who is the “Father of the modern periodic table?”
Mendeleev.
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What is the Formula Unit?
A chemical formula which shows the kinds and numbers of atoms in the smallest representative particle of the substance.
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What is a chemical?
Any substance that has a definite composition.
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What is the Law of Conservation of Mass?
States mass is neither created nor destroyed.
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What are the parts of a wave?
Origin, crest, trough, amplitude, and wavelength.
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What is known as the horizontal row? What is known as the vertical column?
Periods. Groups.
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What is coordination number?
Number of ions of opposite charge surrounding it.
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What is the Scientific Method?
A systematic approach used in scientific study.
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What is mass number?
The total number of p+ and n^0 that make up the nucleus of an isotope.
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What is quantum?
The minimum amount of energy that can be gained or lost by an atom as it heats or cools.
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Why does the Periodic Table have such an unusual shape?
The shape helps to tell us about the chemical properties of different elements. Elements in the same group (column) have similar chemical properties.
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What is Ionic Bonding?
Force of attraction between oppositely charged ions.
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What is the difference between a law and a theory?
A law summarizes what happens. A theory is an attempt to explain why it happens.
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What is the atomic number of an element?
The number of p+ of each atom of that element.
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What is the photoelectric effect?
When light of a certain frequency strikes a metal surface and ejects electrons.
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What is an Atomic Radius?
Half the distance between the two nuclei of a diatomic molecule.
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What are Monatomic Ions?
Ions formed from a single atom.
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What does every change (physical or chemical) involve?
Energy transfer.
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What is the Plum Pudding Model?
Thomson believed that e- were like plums embedded in a positively charged “pudding.”
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What is the Atomic Emission Spectra of an element?
The set of frequencies of the EM waves emitted by atoms of the element.
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What is ionization energy?
The amount of energy required to remove one e- from a neutral atom.
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What are Polyatomic Ions?
Groups of atoms that stay together and have a charge.
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