Ionic bonds
Once ionic compounds turn to liquid or get dissolved in water then and ONLY THEN are they good or bad conductors of electricity?
Good
When bonding occurs, METALS always ------electrons
Lose
When atoms LOSE electrons do they gain or lose energy?
Gain
When bonding occurs, NONMETALS always ----- electrons
Gain
Ions form when an atom ----- or ------ electrons
Gains or loses
Atoms want how many electrons in their outer shell?
8
What is a lattice similar to?
A wall
Another name for a negatively charged ion
Anion
An ionic bond is the force of ----- that holds together oppositely charged ions
Attraction
However, it is important to know that ionic compounds are ----- solids with high melting and boiling points
Brittle
Another name for a positively charged ion
Cation
The negative ion to positive ion attraction an ionic bonds creates a strong and ridgid ------ lattice
Crystal
Ionic compounds form what instead of molecules?
Crystals
What does it take to remove valence electrons during ionic bonding?
Energy
A ----- bond is the force of attraction that holds together oppositely charged ions
Ionic
Atoms that have a different number of neutrons but the same number of protons are called -----
Isotopes
Does it take a large or small amount of energy to break an ionic bond?
Large
Does it take less or more energy to remove a Small number of electrons?
Less
When atoms gain electrons do they gain or lose energy?
Lose
Does it take more or less energy to break free from a Larger number of electrons?
More
If an atom has 7 electrons in its outer shell, will it form a positive or negative ion? Why?
Negative, because it needs to gain an electron to fill its outer shell
If an atom GAINS an electron, it becomes ----- charged
Negatively
Atoms of the SAME element that have DIFFERENT numbers of ----- are called isotopes
Neutrons
Ionic bonds form when atoms of a metal transfer electrons to atoms of a ------
Nonmetal
During ionic bonding, atoms become ------- charged ions
Oppositely
Ionic bonds are formed between what two things?
Positive and negative ions
If an atom LOSES an electron, it becomes ------- charged
Positively
Ionic bonds are strong and the crystals are ------
Ridgid
Different isotopes of the same elements generally have the ------ chemical properties
Same
Give four characteristics of ionic compounds?
Solids, High melting point High freezing point Poor electrical conductor
Are ionic bonds strong or weak?
Strong
What happens when a positive and negative ion get near each other?
They become attracted to each other and transfer electrons
Give an example of one way in where the human body needs ions?
To regulate the human heart
