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What is the difference in electronegativity between the elements in this molecule? CO
.89
Silver Nitrate Ag(NO3)2 can be classified as
Pure substance, molecule
Pizza can be classified as
Mixture, heterogeneous
Salt water is considered a pure substance
False
Salt is considered a Pure Substance
True
What are molecules?
A chemical structure with 2 atoms that can be the same. Ex. O3 O2
What are compounds?
A chemical structure with 2 different elements. Ex. H2O
When Beryllium bonds with Fluorine it will most likely be…
Iconic
When Beryllium bonds with Fluorine what will the ratio of atoms be?
1 Beryllium : 2 Fluorine
How many elements are in H2SO4?
3
What is the % ionic character for CO2?
19
Which element is has properties most like O?
Se, S, Te, Po
This type of compound is usually found in solid form..
Ionic
This type of compound has a higher melting point…
Ionic
How many valence electrons makes the shell full for Helium?
2
What is the percent ionic character for NaCl?
70%
Is NaCl considered an ionic bond, covalent, or a metallic covalent bond?
Ionic
In the event that H2O is covalent, would it be considered nonpolar or polar?
Polar
What is the difference between nonpolar and polar?
In NaCl, which element is the cation?
Na
In KI, what type of ion is I considered?
Anion
In the compound LiF, which is the anion?
F
What type of atom (ionic)
metals & nonmetal
What type of atom (covalent)
nonmetals
Transfer or share (ionic)
Transfer
Transfer or share (covalent)
Share
Type of structure (ionic)
Crystalline
Type of structure (covalent)
3D molecular shape
Physical state (ionic)
Solid at room temp
Physical state (covalent)
liquid/gas
Melting point (ionic)
High
Melting point (covalent)
Low
Soluble in water (ionic)
Yes
Soluble in water (covalent)
Some, only polar
Conduct electricity (ionic)
Yes
Conduct electricity (covalent)
No
Do covalent bonds burn easy?
No
Are ionic bonds brittle and ridgid?
Yes
Polar ranges
.4-1.7
Nonpolar ranges
Less than .4
Unequal or equal (polar)
Unequal
Unequal or equal (nonpolar)
Equal
Copper Chloride is a compound with the chemical formula CuCl2. What does the “2” tell you?
2 CL
If Boron bonds ionically, what will the ionic symbol be?
B3+
An atom that loses an electron is called a(n)_______.
Cation
An atom that gains an electron is called a(n)_______.
Anion
Which group on the PTE has the most reactive metals?
1
What is the symbol for Nickel if it gains 2 electrons?
Ni2-
Which element has the highest EN?
F
What is the air around us?
A mixture
Groups that lose valance electrons are…
1,2,13,14
What is the formula order?
Metal nonmetal
