Polyatomic
What is a polyatomic ion?
a covalently bonded molecule (made up of more than one element) that has a charge.
What types of elements make up covalent compounds?
Non-metals
To achieve a full valence shell, do metals gain or lose electrons?
Lose electrons
Where do the roman numerals get places in multivalent naming
After the metal
How many elements do you need to make a covalent compound?
A polyatomic ion is made up of ____ or more covalently bonded atoms
2
What number does the prefix hepta stand for?
7
What is the structure called that holds ionic compounds together?
How many charges can manganese have and what are they?
3: 2+, 3+, 4+
Are covalent compounds better insulators or conductors?
Insulators
What is the only positive polyatomic ion?
Ammonium (NH4)
What is the prefix for 9?
Nona
Do crystal lattice structures always make a cube shape?
No, as long as they have a regular pattern they can form many shapes
What multivalent ion had the highest positive charge?
Rhenium
True or false: Covalent compounds have low melting points?
True
What is the name of the polyatomic ion CrO42-
Chromate
What is the formula for Iron (III) hydrogen sulfate?
Fe(HSO4)3
What are two properties of ionic compounds?
brittle, hard, high melting point
What number does this roman numeral represent?
IV
What is the chemical formula for water and what is the scientific name?
H2o
Dihydrogen monoxide
What is the formula for beryllium and acetate making a compound?
Be(CH3COO)2
the toxic brown gas NO2 is found in smog in urban areas. What is its name?
In what state do ionic compounds best conduct electricity?
Liquid
What does the roman numeral represent in the name?
Ionic charge of the multivalent metal.
Why do covalent molecules have weak bonds with other covalent molecules?
Full valence shells