Ions
Valence Electrons
Ionic Bonds
Covalent Bonds
Random
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? (what is occurring between the valence electrons)
A covalent bond forms when atoms share electrons.
100
How many electrons are needed in the outer energy levels of most atoms for them to be chemically stable?
8
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 type of elements does a covalent bond form between?
A covalent bond forms between nonmetals.
200
Which of the following pairs of elements will combine to form an ionic compound?
A. C and Cl
B. K and Cl
C. H and S
D. N and O
B. K and Cl
300
what is an ion
a charged atom
300
based on the number of valence electrons would elements in group 18 make bonds?
no
300
Metals usually form _______ ions.
positive
300
Which of the following compounds has a covalent bond?
A. LiF
B. NaCl
C. CO2
D. Na3P
C. CO2
300
Which of the following pairs of elements will combine to form an covalent compound?
A. Mg and C
B. K and Cl
C. H and S
D. Na and Cl
C. H and S
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
A negatively charged atom gains electrons when it is bonded to another with an ionic bond, so the atom becomes more ________.
Negative
400
What type of bond is formed, and what type of change is occurring, in the figure below? 
A. covalent bond; chemical change
B. ionic bond; chemical change
C. ionic bond; physical change
D. covalent bond; physical change
A. covalent bond; chemical change
400
When Nitrogen forms an ion, the charge is?
3-
500
What is a Cation?
a positively charged ions
500
why wont elements in group 18 make bonds?
because their outer shell is full
500
What are properties of substances that are bonded by ionic bonds?
They are solids at room temp., have high melting/boiling points, and good conductors.
500
What are the properties of a substance that is bonded by covalent bonds?
The properties are low melting and boiling point, also poor conductors.
500
When nonmetals form ions, the charge of the ion is usually?
negative