Key Terms and Key Phrases
A force that holds two or more atoms together
What is: Chemical Bond
Define Ion
What is: An atom that is no longer electrically neutral after losing or gaining a valence electron.
Provide an example of a chemical formula
What is: Answers will vary
A group of chemical symbols and numbers that represent the elements and the number of atoms of each element that make up a compound.
What is: Chemical Formula
Define Molecule
What is: A group of atoms held together by covalent bonding that acts as an independent unit.
Briefly explain the relationship between the distance of an electron from an atom and the amount of energy it has.
What is: The further away an electron is, the more powerful it is.
The outermost electron of an atom that is used in chemical bonding
What is: Valence Electron
What is: A molecule that has a partially positive end and a partially negative end because of an unequal sharing of electrons.
Explain what makes noble gases unique.
What is: They are, on their own, chemically stable. They rarely bond with other atoms.
A model that represents valence electrons in an atom as dots around the element's chemical symbol.
What is: Electron Dot Diagram
Define Ionic Bond
What is: The attraction between positively and negatively charged ions in an ionic compound.
Name the three main groups that elements are divided into.
What are: Metals, Metalloids, and Non-metals
A chemical bond formed when two atoms share two or more pairs of valence electrons.
What is: Covalent Bond
Define Metallic Bond
What is: A bond formed when many metal atoms share their pooled valence electrons.
Provide an electron dot diagram of the following element:
Group 13
Al
(Aluminum)
What is:
.
Al .
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