atoms
The inner part of an atom that contains the proton and the neutron is called the __________.
Nucleus
Magnessium bromide is an ionic compound with the chemical formula AlCl3 What does the 3 tell you?
What is there are three chlorine ions for every aluminum ion
A combination of symbols that show the ratio of elements in a compound
What is chemical formula
what is a molecule
What is a neutral group of atoms joined by covalent bonds
In what state of matter do ions conduct electricicty?
What is liquid The ions in soild cyrstals are tightly packedand cannot move. If the ions cannot move there is no current.
These particles have a positive charge and are found inside the nucleus.
proton
When an atom loses an electron it becomes a_______
What is positive ion
What is the chemical name of CaF2
What is Calcium Flouride
Molecules that contain two polar bonds are______________
What is sometimes polar
The attraction of a postive and negative ion results in a___________________________
ionic bond
These particles are located within the nucleus, and have no charge.
Neutron
An ionic bond is__________
What is the attraction of oppositely charged ions
Name this compound NA2CO3 2 and 3 are a subscript
What is Sodium Carbonate
A chemical bond that is formed when two atoms share electrons is called
What is covalent bond
Identify the property of Ionic bonds. 1)They have low melting points 2)They have low boiling points 3)The form hard, brittle crystals with characteristics shape 4)They contian no charges
What is they form hard, britle crystals with characteristics shape
These particles are negatively charge and are found outside the nucleus.
electrons
Ions that are made of more then one atom are examples of _______
What is polyatomic ions
When ions having a positive charge form bonds with ions having a negative charge, the charge on the resulting compound is
What is Neutral or Zero
What is a double bond?
What is two pairs of electrons that are shaired between two atoms
Ionic compounds are electrically ___________
What is neutral
Most of the mass of an atom is located here.
nucleus
When an atom gains an electron it becomes a
What is negative ion
Hydroxide(OH-) and Cyanide(CN-) are examples of _______
What is polyatomic ions
A covalent bond in which electrons are shared enequally is called
What is Polar
What are the three properties of Ionic bonds?
What is 1)Ionic crystals 2)High Melting Points 3)Electrical Conductivity