Ions
Valence Electrons
Ionic Bonds
Covalent Bonds
Metallic Bonds
100
What does an atom lose to become positive?
an electron
100
What subatomic particle is used in chemical bonding (be specific)?
valence electrons
100
Ionic bonds form between a _____ ion and a ______ ion.
positive and negative ion
100
When does a covalent bond form?
when two atoms share electrons
100
How do the electrons move in metallic bonds?
move around freely (sea of electrons)
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?
between nonmetals
200
Metallic bonds are formed by the attraction between ________ and the _________ that are around them.
positive metal ions and the sea of electrons around them
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
Why do ionic bonds hold together?
The positive and negative ion attract each other
300
Water is made when oxygen is bonded to another element with covalent bonds. What is the other element and how many atoms of that element is needed?
two hydrogens
300
Metallic bonds give metals certain properties. One of the properties is ductility. What is ductility?
Ductility is the ability to be made into wires.
400
Would two positive ions make bonds?Why?
No, like charges repel
400
How many valence electrons does aluminum have?
3
400
What is the formula for Lead (IV) nitrate
Pb (NO3)4
400
Draw the lewis dot of CH2O
400
Mixing two or more metals makes this.
An alloy
500
What is the charge of a neutral atom that loses 3 electrons?
3+
500
Why wont elements in group 18 make bonds?
they have 8 valence electrons
500
What are the qualities (give 2) of a substance that is bonded by ionic bonds?
crystal shape, high melting points and conduct electricity
500
What are the qualities ( give 2) of a substance that is bonded by covalent bonds?
Burn easy, low boiling point and poor conductors
500
List three properties of metals.
Conductive, malleable, ductile, high melting points