Polyatomic
Covalent
Ionic Properties
Multivalent
Covalent Properties
100

What is a polyatomic ion?

a covalently bonded molecule (made up of more than one element) that has a charge.

100

What types of elements make up covalent compounds?

Non-metals

100

To achieve a full valence shell, do metals gain or lose electrons?

Lose electrons

100

Where do the roman numerals get places in multivalent naming

After the metal

100

How many elements do you need to make a covalent compound?

At least 2
200

A polyatomic ion is made up of ____ or more covalently bonded atoms

2

200

What number does the prefix hepta stand for?

7

200

What is the structure called that holds ionic compounds together?

Crystal lattice
200

How many charges can manganese have and what are they?

3: 2+, 3+, 4+

200

Are covalent compounds better insulators or conductors?

Insulators

300

What is the only positive polyatomic ion?

Ammonium (NH4)

300

What is the prefix for 9?

Nona

300

Do crystal lattice structures always make a cube shape?

No, as long as they have a regular pattern they can form many shapes

300

What multivalent ion had the highest positive charge?

Rhenium

300

True or false: Covalent compounds have low melting points?

True

400

What is the name of the polyatomic ion CrO42-

Chromate

400

What is the formula for Iron (III) hydrogen sulfate?

Fe(HSO4)3

400

What are two properties of ionic compounds?

brittle, hard, high melting point

400

What number does this roman numeral represent?

IV

400

What is the chemical formula for water and what is the scientific name?

H2o

Dihydrogen monoxide

500

What is the formula for beryllium and acetate making a compound?

Be(CH3COO)2

500

the toxic brown gas NOis found in smog in urban areas. What is its name?

nitrogen dioxide
500

In what state do ionic compounds best conduct electricity?

Liquid

500

What does the roman numeral represent in the name?

Ionic charge of the multivalent metal.

500

Why do covalent molecules have weak bonds with other covalent molecules?

Full valence shells