Powers note taking worksheet chapter 18

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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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