Download Chem Lab: Identifying Compounds, Building Periodic Table, Atomic Structure, Trends and more Schemes and Mind Maps Chemistry in PDF only on Docsity!
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:
- Identify the compounds found on the product label
- Identify the elements in the compounds Procedure
- Identify one compound in the list of ingredients on the product label.
- Write the chemical formula of the compound.
- 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
Activity 2. BUILD ME UP! Introduction The periodic table of elements arranges 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:
- Create a periodic table based on their set criteria
- 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
- Build/create your own periodic table using the set metacards with fictitious elements as reflected below.
- Post your created periodic table in a manila paper for presentation. Guide Question
- What is your basis for building/creating your periodic table? Why? Generalization
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
- Determine the number of protons, neutrons and electrons in an atom.
- 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
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
- How do you determine the number of neutrons in a neutral atom? Generalization nvi/sdo/cn
- Examine your work closely. Check if your letter codes are properly arranged according to the clues given.
- Paste the squares in place on Table 8.4. Ask your teacher to check your work.
- Using your corrected periodic table, supply the atomic number and symbol of the element in the spaces provided on each picture. Guide Question
- How do the following properties change within a period? Within a family? a. Atomic size (atomic radius) b. Electronegativity
- 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.
Adapted from Batusan, E.L.; Delos Santos, G.M. Teaching Resource Package. S&T
- Chemistry. UP-ISMED, DECS.
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?
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
