Ions
Ionic Bonds and Compounds
Covalent Bonds
Metallic Bonding
Metallic Properties
100
What is an ion?
An ion is an atom or group of atoms that has an electric charge.
100
How do ionic bonds form?
They form as a result of the attraction between positive and negative ions.
100
What is a covalent bond made from?
A nonmetal and a nonmetal.
100
What is a metallic bond formed from? You should know this.
Two metals
100
What is an alloy?
An alloy is a material made of two or elements that has the properties of metal.
200
How many valence electrons do ions have?
Five, six, or seven.
200
What is an ionic compound?
A compounds that consists of positive and negative ions.
200
What is a molecule?
A molecule is a neutral group of atoms joined by covalent bonds.
200
What is a metallic bond?
An attraction between a positive metal ion and the electrons surrounding it.
200
What are some metallic properties?
Heat conductivity, electrical conductivity, changes in shape, and luster. Ductility and malleability.
300
What do ions become when they bond with other elements.
Ionic compounds.
300
How can you display the way chemicals are arranged?
With a chemical formula.
300
What are double bonds and triple bonds.
A double bond is a covalent link where atoms share 2 pairs of electrons. A triple bond is a covalent link where atoms share 3 pairs of electrons.
300
What does a metal crystal consist of?
It consists of positive charged metal ions embedded in a "sea" of valence electrons.
300
What is ductility.
Ductility is the ability for a metal to bend but not break.
400
What happens when an atom loses an electron?
What happens when an atom gains an electron?
It loses a negative charge and becomes a positive ion.
It gains a negative charge and becomes a negative ion.
400
What are the properties of ionic compounds?
They are hard, brittle crystals that have high melting points. They conduct electricity when they are dissolved or melted.
400
What are polar and nonpolar bonds?
A polar bond is a covalent bond in which electrons are shared unequally. A nonpolar bond is a covalent bond where the electrons are shared equally.
400
Fill in the blank:
The more ______ _______ electrons an atom can add to the "sea", the stronger the metallic bonds within the crystal will be.
valence electrons
400
What is malleability?
The ability to shape a metal.
500
What are polyatomic ions?
Ions that are made of more than one ion.
500
Bonus: What temperature does salt have to be heated to in order for it to melt?
801 degrees Celsius.
500
Bonus: You have a greasy stain on your shirt. You try to wash it off with water but it didn't come off. You go home and use soap and it comes off. Why?
Think of hydrophobic and hydrophillic.
The grease on the shirt is hydrophobic and doesn't go to the water. The soap attracts the grease and gets it off.
500
what is this?
Metallic crystal.
500
What is luster?
The shine of a metal