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Terms in this set (32)
Compound that is made of two or more elements that are chemically combined
Forces that hold atoms or ions together in a compound
What does a chemical formula tell you?
What elements are in a substance and the ratios of the elements
what three things does chemical structure show you
Shows elements in a compound ratio of elements and how elements fit together
What four things can a ball and stick model tell you about a substance?
Bond links, bond angles, number of atoms, ratio of atoms
What can a space filling model tell you that a ball and stick model can't?
How much space it takes up
What two things do ball and stick models and structural formula tell you that a space filling model doesn't?
Bond length and bond angles
What does the structure of a compound determine for the compound?
Properties of the compound
Why do atoms bond together?
So that each atom has a stable electron configuration
Which kind of element forms anions?
Which kind of element forms cations?
How do ionic bonds form?
From the attractions between such oppositely charged ions
What are polyatomic ions?
Groups of covalently bonded atoms that have a positive or negative charge as a group
What kind of structure do ionic compounds form?
List three properties that ionic compounds have because of the strong ionic bonds.
Solids at room temperature, high melting and boiling point, not good conductors when solid
How do covalent bonds form?
Nonmetals end up sharing electrons
Is two atoms share one pair of electrons, how is the bond shown?
F - F (F2)
If two atoms share two pairs of electrons, how is the bond shown?
0 = 0 (02)
If two atoms share three pairs of electrons, how is the bond shown?
N = N (N2)
What kind of covalent bond do atoms of the same element form?
Non polar covalent bond
What kind of covalent bond usually forms between elements of different atoms?
Polar covalent bond
What two types of substances are formed by covalent bonds?
Individual molecules and covalent networks
Describe metallic bonding.
In metals the outer electrons are shared between neighboring atoms creating a sea or cloud of electrons
Why does metallic bonding make metals good conductors of electricity?
Because electrons can move easily from one metal atom to the next
Why does metallic bonding make metals ductile, malleable, and tenacious?
Because this type of bonding is very flexible
What do ionic formulas show about a compound?
Ratio of elements in an ionic bond
What is the only type of formula for ionic compounds?
What is the total charge on an ionic compound?
Neutral - 0
Why do you have to show the charge for some metal ions?
Because some are transition metals so you have to tell the charge.
What is an empirical formula for a compound?
Formula that shows only the ratios of elements in the ionic crystal
What type of compounds only have empirical formulas as their chemical formula?
Which type of compounds can have empirical and molecular formulas that can be different?
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