SCIENCE ACTIVITY

1. 1
Activity 1: Product Labels and its Components
Introduction
The chemistry of chemical products is indicated in some of the product
labels such as toothpaste, soap, detergents and the like. Even basic
ingredients like salt, water and baking soda, they are often identified on a
product label by technical names.
Materials
5 product labels manila paper pentel pen
Objectives
At the end of the activity, the participants should be able to:
1. Identify the compounds found on the product label
2. Identify the elements in the compounds
Procedure
1. Identify one compound in the list of ingredients on the product label.
2. Write the chemical formula of the compound.
3. Identify the elements in the compound
Table 1. Some compounds present in a product
Product
Compound in the
List of
Ingredients
Chemical
Formula
Component
Elements

2. 2
Activity 2. BUILD ME UP!
Introduction
The periodic table of elementsarranges all of the known chemical elements in an
informative array. Such arrangement provides information which are beneficial to
explore and understand both the physical and their chemical properties.
Objectives
At the end of the activity, the participants should be able to:
1. Create a periodic table based on their set criteria
2. Provide an explanation why such fictitious elements were arranged as
reflected on their own created periodic table
Materials
Metacards with fictitious elements
Manila paper, pentel pen, masking tape
Procedures
1. Build/create your own periodic table using the set metacards with fictitious
elements as reflected below.
2. Post your created periodic table in a manila paper for presentation.
Guide Question
1. What is your basis for building/creating your periodic table? Why?
Generalization

3. 3
Worksheet 1: Historical Development of the Periodic Table
Directions: Fill in the information need in the table below
Name of the Scientist
developed the periodic
table
Basis for the
development of the
his periodic table
Demerits
Guide Questions
1. What basis did Dobereiner use in developing his periodic table?
Newlands’? Mendeleev’s?
2. What were the demerits in Dobereiner’s periodic table? Newlands’ and
Mendeleev?
3. According to Mendeleev, what do you call the horizontal rows in the
periodic table? What about the vertical columns?

4. 4
Activity 3. Count Me in!
Atomic Structure Worksheet
Particles that are smaller than the atom
are called subatomic particles. The three
main subatomic particles that form an atom
are protons, neutrons, and electrons. The
center of the atom is called the nucleus.
Materials
Worksheet Manila paper
Pentel pen
Objectives
At the end of the activity, the participants should be able to
1. Determine the number of protons, neutrons and electrons in an atom.
2. Using the worksheet below, fill out the needed sub-atomic particles. Take
note that:
Atomic number = number of protons = number of electrons
Mass number = number of protons + number of neutrons

5. 5
Table 1. Atomic Structure Worksheet
Element Symbol Atomic
Number
Mass
Number
Protons Neutrons Electrons
Iron 13 56
Bromine 35 35
Iodine 127 53
Sulfur 16 32
Nitrogen 14 7
Oxygen 16 8
Lead 82 82
Guide Question
1. How do you determine the number of neutrons in a neutral atom?
Generalization
nvi/sdo/cn

6. 6
Activity 4: TRENDY
Purpose
In this activity, you should be able to identify unknown elements represented by
letter codes (A-Z) using established trends in some of their properties,like atomic size
and electronegativity.
Materials
Scissors, paste, Table 8.4 (blank periodic table), Figure 8.7
Procedures
3. Cut out Figure 8.7 into separate squares A-Z
4. Study the information in the squares and the clues below. Locate the proper
position of the elements in Table 8.4.
The following sets of elements belong together in groups but not in order: ZRD,
PSIF, JXBE, LHT, QKA, WOV, GUN, YMC.
- Z has an atomic number of 5.
- P has 3 protons.
- J is a noble gas with an atomic number 12 times that of P.
- L belongs to family IIA (Group 2).
- Q is a nonmetal having 16 electrons.
- W is the only liquid nonmetal at room temperature.
- G is a metalloid with atomic number 32.
- Y belongs to family VA (Group 15).
- S is a metal which produces a yellow flame.
- B is a noble gas with an atomic number 2 times of Z.
- T has an atomic mass which is more than that of H.
- D has the largest atomic mass in its group
- M has an atomic number one less that of A.
- N has 14 protons.
- I is an alkali metal with an atomic number of 19.
- R is a metal which is mostly used for kitchen ware.
- F is a gas.
- X has an atomic number one higher than F.
- E is a noble gas.
- O is a nonmetal which combines easily with a certain metal to form table
salt.
- U has a total of 6 electrons.
- C has a total of 15 electrons in its neutral state.

7. 7
5. Examine your work closely. Check if your letter codes are properly arranged
according to the clues given.
6. Paste the squares in place on Table 8.4. Ask your teacher to check your work.
7. Using your corrected periodic table, supply the atomic number and symbol of the
element in the spaces provided on each picture.
Guide Question
2. How do the following properties change within a period? Within a family?
a. Atomic size (atomic radius)
b. Electronegativity
3. Explain why there is an increase in atomic size in descending (top to
bottom) a given family?
Figure 8.7. Data squares for Table 8.4

8. 8
Adapted from Batusan, E.L.; Delos Santos, G.M. Teaching Resource Package. S&T
– Chemistry. UP-ISMED, DECS.

9. 9
Worksheet 2: Identifying Group Names in the Periodic Table
Directions: Fill in the table presented below regarding groups in the Periodic
Table.
Group Number Group Name / Family Example of Element
1
2
13
14
15
16
17
18
3 to12

10. 10
Worksheet 3: React!
Instructions:
• Determine the group number of the elements presented in the table.
• Study the table for trends in reactivity.
Element Symbol Group No.
Potassium K
Sodium Na
Lithium Li
Calcium Ca
Magnesium Mg
Aluminum Al
Zinc Zn
Iron Fe
Tin Sn
Lead Pb
Copper Cu
Silver Ag
Gold Au
Platinum Pt
Guide Questions:
• What is the most reactive metal? Least reactive?
• What is the trend of reactivity of metals across a period?
• What is the trend of reactivity of metals down a group?

11. 11
Worksheet 4: Trends in the Periodic Table Worksheet
Directions: Fill in the table presented below regarding the various trends in the
Periodic Table.
Across a Period Down a Group
Atomic Radius/ Atomic
Size
Reactivity of metals
Metallic properties