1. The document discusses science vocabulary terms related to electrons, ion formation, and chemical bonding. 2. It asks to identify examples as elements or compounds and identify elements as metals, non-metals, or metalloids. 3. The main types of chemical bonding discussed are ionic bonding, covalent bonding, and metallic bonding. Ionic bonding involves transfer of electrons between metals and non-metals, covalent bonding is sharing of electrons between non-metals, and metallic bonding is the attraction of free-floating electrons within metals.

1. SCIENCE VOCABULARY:
Identify the following sentences.
1. They are referred to as the outermost electrons.
2. It is the measure of tendency of an atom to attract
more electrons.
3. It is an energy needed by atoms to pull or remove
one or more electrons from neutral atom.
4. A dot diagram symbol written around the element
symbol.
5. The stability of an atom of having complete valence
electrons.

2. MELCS: Explain how ions are formed; (S9MT-IIe-f-16)
Enabling Objective
 Describe chemical bonding.
 Identify the types of chemical bonding.

3. Review:
Identify the following as ELEMENT or
COMPOUND.
1.Sodium Chloride
2.Potassium
3.Nitrogen
4.Carbon dioxide
5.Krypton

4. Review:
Identify the following elements, which is
METAL, NON-METAL and METALLOIDS.
1.Fe
2.Si
3.He
4.Mg
5.B

11. • A lasting attraction between atoms, ions or
molecules that enables the formation of
CHEMICAL COMPOUNDS

12.  Chemical bonding -the formation of a chemical bond between two or more atoms,
molecules, or ions to give rise to a chemical compound. These chemical bonds are what
keep the atoms together in the resulting compound.
 BOND = a force that holds groups of atoms together
 TO BOND = when two atoms become held together
 The bond may result from the electrostatic force of attraction between atoms with
opposite charges, or through the sharing of electrons as in the covalent bonds.
 There are three primary types of bonding: ionic, covalent, and metallic.

21. • also called “Molecular bond”
• a chemical bond that

24. IONIC BOND COVALENT BOND
Between a metal and
a non-metal
A transfer of electrons
Conducts electricity
when melted or
dissolved
Crystal solids
(made of ions)
• Between 2 non-metals
• A sharing of electrons
• Does not conduct
electricity
• Solid, liquid or gas
(made of molecules)

25. IONIC BOND
Compounds are
crystal lattices of
positive and
negative ions
Chemical formula is
the formula unit (the
formula that repeats)
COVALENT BOND
Compounds are
distinct and separate
units called
molecules.
Chemical formula can
be called a molecular
formula

26. IONIC BOND
Compounds are
crystal lattices of
positive and
negative ions
Chemical formula is
the formula unit (the
formula that repeats)
Inorganic
compounds are
often ionic.
COVALENT BOND
Compounds are
distinct and separate
units called
molecules.
Chemical formula can
be called a molecular
formula
Organic (biological)
molecules are covalent

40. IONIC COMPOUNDS COVALENT COMPOUNDS
Non-metal + Metal Non-metal + Non-metal
Transfer electrons (metal to non-metal) Sharing of electrons
Positive and negative charges No charges
Solid at room temperature(25°C)
Soluble in water
Solid, Liquid , gas at room temperature
Insoluble in water
High melting and boiling points Low melting and boiling points
High attraction between particles
Good conductors of electricity
Weak attraction between molecules
Good insulators