Show:
Chemical bonding
Valence electrons
Ionic bonds
Covalent & metalic bonds
Mystery question
100
What is chemical bonding?
The joining of atoms to form a new substance.
100
What are valence electrons ued for?
To form new cemical bonds
100
What is an Ionic bond?
The attractive force between oppisitely charged ions
100
What are metallic bonds?
A sea of electrons.
100
how many elements are in the periodic table?
118
200
Valence electrons are used uesd to?
Form chemical bonds.
200
The number of valence electrons in an atom determines what?
whether the atom will form bonds.
200
When do Ionic bonds form when?
electrons are transferred from one atom to another.
200
Where are metallic bonds found?
IN metals
200
what happens when sodium is put in water?
it reacts violently
300
The number of valence electrons in an atom determines what?
Whether the atom will bond or not.
300
What is this diagram called H H:C:H H
A Electron dot diagram.
300
Positive and negative ions form when?
Atoms gain or lose electrons.
300
what allows metals to be reshaped?
malleability
400
in the first energy level of an atom how many electrons can be held?
2
400
What does the valence electrons determine about an atom?
It's chemical properties.
400
ionic compounds form solids by building a repeated pattern
a crystal lattice
400
When do covalent bonds form?
when atoms share electrons.
500
a possible outcome of carbon, hydrogen and oxygen
sugar, alcohol and citric acid
500
What happens if there aren't enough electrons in the outer ring.
The atom will either go steal electrons or share elecrons.
500
in table salt how is the crystl lattice built up?
so that the positive ions are nearest the negetive ions forming a solid.
500
Metallic bonds form by what?
Attractions of meatls and ions and the electrons around them.
500
what is the difference between malleability and ductability?
malleability: metal can be reshaped ductability: metal can be drawn into wires