Ionic Bonds
Colvalent Bonds
Metallic Bonds
Valence Electrons
Chemical Bonding
100
What are some properties of Ionic Bonds ?
They are hard, brittle, and have high melting points.
100
What are some qualities of covalent bonds ?
They have low melting and boiling points and are brittle.
100
What is a metallic bond ?
A sea of electrons which are shared.
100
What are valence electrons?
The electrons in the outermost cloud/ring of an atom.
100
What is chemical bonding?
The joining of atoms to form new substances.
200
Ionic bonds form between what kind of atoms ?
Positive and negative atoms.
200
Once electrons are bonded what is formed ?
A molecule (group of atoms held together by covalent bonds)
200
Are metallic bonds good conductors ?
Yes, they are good conductors of heat and electricity.
200
How many valence electrons do groups 3-12 have?
1 or 2
200
What is a chemical bond?
The force of attraction that holds atoms together.
300
What is formed after Ions have bonded ?
Crystal Lattice
300
What happens when atoms share electrons ?
A bond is formed.
300
What are the properties of metals?
Electrical conductivity, ductility, and malleability
300
During bonding, what can happen to the valence electrons to get a full cloud?
The atom can lose, gain, or share its electrons.
300
What does chemical bonding depend on?
The valence electrons
400
What kind of attraction is between the positive and negative atoms?
Electrostatic attraction (opposites attract)
400
What happens when an atom has a full cloud ?
It wont bond with other atoms.
400
How come metal can be reshaped without breaking?
The metallic bonds occur in different directions.
400
Why do the elements in group 18, on the periodic table, not bond?
They have 8 valence electrons, meaning they have a full cloud.
400
Why do atoms want to bond?
To get a full cloud/full ring
500
What has to happen to get a positive Ion and a negative Ion?
For a positive Ion you have to lose electrons and for a negative Ion it has to gain electrons.
500
What can atoms do to make their cloud full ?
They can take, lose, or share electrons.
500
Why are electrons free to move around in metals?
The metal atoms' outermost clouds overlap causing metallic bonds to extend throughout the metal.
500
How many dots are there in an electron-dot diagram for nitrogen? Why?
5; it has 5 valence electrons
500
How come when hydrogen (explosive gas) and oxygen (gas) bond, they form water (liquid)?
Because when atoms bond together they make a completely NEW substance
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