Ions
Valence Electrons
Ionic Bonds
Covalent Bonds
Metallic Bonds
100
What does an atom have to do to become a positive ion?
Lose an electron
100
What determines if the atom will bond with another?
valence electron
100
Ionic bonds form between a _____ ion and a ______ ion.
A positive and negative ion
100
When does a covalent bond form?
A covalent bond forms when atoms share electrons.
100
How do the electrons move in metallic bonds?
The electrons move around freely.
200
What does an atom have to do to become a negatively charged ion?
gain electrons
200
How many valence electrons are in group 16?
6
200
Ionic bonds form between what classes of elements?
Metals and nonmetals
200
What class of elements does a covalent bond form between?
A covalent bond forms between nonmetals.
200

Where are the metals located on the periodic table?

On the left side and in the middle

300

What is the formula for sulfate

SO42-

300
based on the number of valence electrons would elements in group 18 make bonds?
no
300

What is the difference in electronegativity if two atoms form an ionic bond?

2.0 and above

300

In nonpolar covalent bond what is the difference in electronegativity?

From Zero to 0.4

300

Metallic bonds give metals certain properties. One of the properties is conductivity. What is conductivity?

The ability for electricity to move through metals.

400
Would two positive ions make bonds?Why?
No, because alike charges are not attracted to each other.
400
How many valence electrons does aluminum have?
3
400

What is the fomula of the compound formed by Magnesium and Phosphate

Mg3(PO4)2

400

Draw the Lewis Dot Stucture of N2

: N ::: N :

400
List three properties of metals.
conductivity, malleability, and ductility
500

Would nitrogen form a positve or negative ion? What would its charge be?

Negative; -3

500
why wont elements in group 18 make bonds?
because their outer shell is full
500
What are qualities of substances that are bonded by ionic bonds?
They are hard, brittle, and have high melting points.
500
What are the qualities of a substance that is bonded by covalent bonds?
The qualities are low melting and boiling point, also they tend to be brittle when in a solid state.
500
Why are metals so malleable?
because the electrons swim around the metal.
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