Powers note taking worksheet chapter 18
How much is all the elements, that make up the human body, worth
$4.50
The sum of the charges on the ions in a unit of the compound is ___________
0
In a(n) __________________ molecule, electrons are shared equally
Nonpolar
Nonmetals have a ________________ oxidation number
Number
Prefix of 8
Octa
____________________________ are the amount of electrons an atom has gained, lost, or shared to become stable
Oxidation number
An iconic compound is held together by the __________________________________
Ionic bond
A(n) chemical bond is the force that holds _____________________ together
Atoms
An ionic bond is the forced of ___________________ between opposite charges of the ions
Attraction
_____________________ are composed of two elements
Binary compound
Atoms can form double or triple _________________________ depending on whether they share two or three pairs of electrons.
Bonds
A(n) ion is a chargers particle because it has more or fewer _____________________ than ___________________
Electrons; protons
Chemists use _____________________ form the periodic table to write formulas for compounds
Elements
Electrons shared in a molecule are held ____________________ to the atoms with the larger nucleus
Closer
Elements that DO NOT have full outer energy levels are more stable in a _____________________
Compound
A ______________________ is the forced of attraction between atoms sharing electrons
Covalent bond
Prefix of 2
Di
What is HOBrFINCl
Diatomic molecules
To write ___________________________, use the oxidation numbers, their least common multiple, and put parentheses around the polyatomic ion before adding a subscript
Formula
Use oxidation numbers and their least common multiples to write _____________________
Formulas
________________ are neutral particles formed as a result of sharing electrons
Molecules
Prefix of 1
Mono
a ___________________ is a compound with water chemically attached to its ions
Hydrate
Why does N2 have a triple bond
Nitrogen has five valence electrons, so it needs three more valence electrons to complete its octet. A nitrogen atom can fill its octet by sharing three electrons with another nitrogen atom, forming three covalent bonds, a so-called triple bond.
Prefix of 3
Tri
Atom forms compounds when the compound is more _________________ than the separate atoms.
Stable
Prefix of 4
Tetra
A formula must have the correct number of positive and negative ions so the charges _________________________
balance out
A(n) _____________________ is composed of symbols and subscripts indicating the number of atoms of an element is a compound.
chemical formula
When writing formulas, remember that the compound is ___________________
neutral
Prefix of 5
penta
Some elements combine chemically and no longer have the same __________________________ they did before forming a compound
properties
What symbol designates the unequal sharing
Delta
The compound contains ______________ or more elements
2
Novel gases are more ____________________________ than other elements because they have a complete outer energy level
Chemically stable
When an atom ___________________ an electron, it becomes a negatively charged ion.
Gains
Prefix of 7
Hepta
Prefix of 6
Hexa
When an atom __________________ an electron, it becomes a positively charged ion
Loses
Use the name of the first element, the root name of the second element, and the suffix -ide to write the _____________ of a binary ionic compound.
Name
The result the ionic bond is a(n) _______________ compound
Neutral
A(n) __________________ molecule has one end that is slightly negative and one end that is slightly positive although the overall molecule is neutral
Polar
_____________________ are positively or negatively charged, covalently bonded group of atoms
Polyatomic ions
All metals have a _____________________ oxidation number
Postive
To write names, write the name of the ________________ ion first; then write the name of the __________________ ion.
Postive; negative
Name binary covalent compounds by ushering ___________________ to indicate how many atoms of each element are in the compound
Prefixes
Atoms can lose, gain, or _____ electrons to get a stable outer energy level.
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