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Quarter 2 Common Assessment Review
App chem Q2 CA review
Terms in this set (21)
What is another name for the representative elements?
Group A elements
What is the category that includes the majority of elements?
What are Protons?
Positively charged subatomic particles that equal the atomic number of an element.
A negative subatomic particle that plays the greatest part in determining the properties of an element.
This generally decreases as you move from left to right across a period.
The element that takes electrons to form an ion is called the ___.
Why did chemists start organizing elements into groups in the early 1800's?
There were so many new elements that had been discovered.
Electronegativity generally does what from left to right across a period?
The name given to the electrons in the highest occupied level of an atom.
How does Calcium obey the octet rule when reacting to form compounds.
It gives up electrons.
What is the maximum charge an ion can have?
3 (+ or -)
To achieve a noble-gas electron configuration, how many electrons does barium have to give up?
Why are alloys important?
Because their properties are often superior to those of their component element.
Magnesium and Fluorine form...
magnesium fluoride, an ionic bond.
Ionic compounds are in solid crystalline form when at?
The arrangement of bonded ions is shown by the...
structural formula of a molecule or polyatomic ion.
Atoms share electrons in covalent bonds to...
attain a noble-gas electron configuration.
Molecular orbital theory is based on...
Quantum mechanical theory.
In a molecular bonding orbital, the electrons are located...
between the two atomic nuclei.
Molecules adjust their shapes to keep what as far apart as possible, according to VSEPR theory.
Pairs of Valence Electrons.
According to VSEPR theory, repulsive forces between unshared pairs of electrons cause water molecules to have what shape?
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