Elements and Atoms
Atoms Bonding, and the periodic table
Ionic Bonds (22)
Covalent Bonds (30)
Bonding in metals
100
______ are the most simple, pure substances.
Elements
100
Which side are the Metals usually on in the periodic table.
The left.
100
Sodium chloride is an example of an ______.
ionic compound.
100
The chemical bond formed when two atoms share electrons is called a _____ ___.
Covalent Bond
100
A/An _____ is a material made of two or elements that have the property of metals. Sterling silver would be an example of this object.
Alloy
200
A pure substance made of 2 or more elements that are combined in a specific ratio is a ________.
Compound
200
_____ metals only have one valence electron and are on the farthest left side on the periodic table.
Alkali Metals
200
An ____ ____ is the attraction between two oppositely charged ions.
Ionic bonds
200
A _______ molecule is a neutral group of atoms joined together by covalent bonds.
Molecule
200
A process called _____ _____ is the attraction between a + metal ion and the electrons surrounding it.
Metallic Bonding
300
What two elements make up sodium Chloride?
Sodium and Chlorine.
300
As the number of protons increases the number of _______ increases with it.
Electrons!
300
When an atom gains an electron, it loses a negative charge and becomes a ________ ion.
Positve
300
When two atoms share two pairs of electrons and form a ______ ___.
Double Bond
300
Name 3 characteristics of metals.
good conductors of heat and electricity
malleable
ductile
Most of the metals are solids at room temperature and shiny
400
The ____ ___ group is the most stable group of elements on the periodic table.
Noble Gas
400
The number of ____ ____ in an atom of an element determines the ways that an atom can bond with other atoms.
Valance Electrons
400
Ions that are made of more than one atom are called ______
polyatomic ions
400
What is a molecular compound?
A compound made of molecules
400
Heat causes particles of matter to move ______.
Faster.
500
Elements are often called the building blocks of ____
Matter
500
_______ usually combine with metals to become as stable as possible!
Non-metals
500
Which is not a characteristic of ionic compounds
A) Hard
B) Low melting point
C) conduct electricity
D) melted when desolved in water
B) Low melting point
500
Most molecular compounds do not conduct electricity.
(True or False)
True
500
The "sea of electrons" model of solid metals explains their ability to conduct ____ and ______.
Heat and Electricity.