This is the copy of the presentation during my teaching demonstration for Chemistry-9 Chemical Bonds.

2. MR. JERECHO GREG
R. GETARUELAS
• Bachelor of Secondary
Education Major in General
Science- 4th Year
• Xavier University-Ateneo de
Cagayan

4. SAD ANGRY
SCARED TIRED
HAPPY
NERVOUS

7. Instructions:
REVIEW!

13. - One valence
electron

15. -Three valence
electron

27. Processing Questions:

29. “I CAN SEE
YOU”

30. Instructions:
• The class will be divided into four groups,
the same group will be applied to the next
group activities.
• Pictures with compounds will be shown
on the screen
• The groups will be asked to identify what
elements are present in the shown
compounds.
• They will be given 30 seconds to agree on
an answer and write their answers on their
whiteboards.
• Wait for the signal to raise the boards.

35. COMPOUNDS
?

36. Compounds are chemical substances made up
of two or more elements that are chemically
bound together.

38. CHEMICAL BONDS
Chemical bonding is the attraction between two
or more atoms that allows them to be able to
form a stable chemical compound.

40. Atoms are trying to reach the most STABLE
state that they can. Many atoms become stable
when their valence shell is filled with electrons
or when they satisfy the octet rule.

41. Valence electrons give you the number of
electrons at the outermost energy level of the
atom.

44. The octet rule refers to the tendency of atoms to
prefer to have eight electrons in the valence shell.
Hydrogen and Helium are exceptions because they can
hold a maximum of two valence electrons

46. If atoms don’t have this arrangement, they’ll want to
reach it by gaining, losing, or sharing electrons via
bonds.
To become STABLE.

49. Electronegativity is a measure of the tendency
of an atom to attract electrons, the higher its
value, the higher its tendency to attract
electrons.

51. Ionization energy is the energy needed to pull or
remove one or more electron/s from a neutral
atom. The lower the ionization energy the
easier to remove its valence electron.

55. The table salt is composed of
both Sodium and Chlorine.
Sodium is classified as a metal and
Chlorine is a nonmetal.

57. Ionic bonding is a type of chemical
bonding that involves the
electrostatic attraction between
oppositely charged ions in a
chemical compound such as
metals and nonmetals.

58. IONS are formed after a
metal atom transfers its
valence electron to a
nonmetal atom.

63. The dry ice or carbon dioxide is
composed of both Carbon and
Oxygen. Carbon is classified as a
nonmetal and Oxygen is also a
nonmetal.

65. Also called as “Molecular Bonds”
Chemical bond that involves the
sharing of electrons of two
nonmetals. A molecule is formed.
Nonmetals have strong energy
attractions or high electronegativity.

68. Metallic bonds are held together
by the sharing of electrons
between metal atoms.

72. Instructions:
• The students will be divided into four
groups, it will be the same group from the
previous activity.
• Each group will then have to draw lots from
numbers 1-4.
• Each number represents a different type of
activity.
• They will be provided with activity sheets
based on their group.
• The presentation should be done at a
maximum of 5 minutes per group.
• Their performances/outputs will be
rated using the rubric.

80. THANK YOU
CLASS!