Secondary Science - Third Year - ChemistryIntroduction to Chemistry 1: Appreciate the importance of Chemistry to daily life. - Describe the role of Chemistry in society and industry.
- Cite contributions of Chemistry to other sciences like medicine, nursing, nutrition, psychology, etc.
- Explain the different tasks of a chemist.
2: Appreciate the achievements of Filipino and foreign scientists in the development of chemistry and related technology. - Discuss researches conducted by Filipino scientists which find applications in chemistry.
- Cite contributions of Filipino and foreign scientists in the field of chemical technology.
- Express one's feelings for the significance of the contributions of scientists in chemistry and related field.
- Identify the values and traits demonstrated by the above scientists.
3: Appreciate and understand the uses of the different apparatus used in a chemistry laboratory. - Give the uses of some important apparatus used in chemistry laboratory.
- Explain the safety precautions to be observed in a chemistry laboratory.
- Observe wise use of apparatus in the laboratory.
4: Demonstrate understanding of mathematical concepts in chemistry. - Recognize the importance of significant figures in scientific calculations.
- Identify the different mathematical concepts involved in solving problems using scientific notation.
- Solve problems involving conversions in length, volume, temperature, pressure, etc.
- Explain the basic concept of a mole.
Classifying Matter 5: Demonstrate skill in identifying chemical systems and classification of matter. - Differentiate between homogenous and heterogeneous systems.
- Discuss pure substances and mixtures.
- Describe three (3) types of mixtures.
- Differentiate between elements and compounds in an operational manner.
- Classify elements as metals or non-metals based on their properties.
- Detect compounds whether acids, bases and salts, using indicators.
- Group compounds into organic and inorganic substances using formulas.
6: Demonstrate understanding of elements and compounds present in daily life. - Discuss elements and compounds which are basic to our daily existence like building components of teeth and bones; food preparations and medicines.
- Identify elements and compounds used in industries which are vital to the national economy.
7: Demonstrate knowledge of simple techniques in preparing, separating and purifying matter. - Discuss different methods of separating mixtures.
- Prepare useful mixtures from easily available resources in the Community.
- Separate the components of a mixture.
- Recover useful chemicals/materials as a result of the separation of mixtures.
Solutions 8: Demonstrate understanding of solutions. - Identify types of solutions.
- Describe the changes that occur in the dissolving process substances.
- Relate the changes that accompany this process to energy changes and molecular interactions.
- Enumerate and explain the difference among saturated, unsaturated and supersaturated solutions Explain the factors affecting solubility.
- State and explain the colligative properties of a solution.
- Identify the relationship of the mole concept to concentration of solutions.
- Solve problems on solution concentrations (percentage by volume and molarity).
9: Understand solutions at work in the natural environment. - Apply knowledge of the importance of colligative properties of solutions to daily living
- Apply knowledge of the importance of colligative properties of solutions to daily living
- Explain the importance of electrolyte balance in the body
Colloids 10: Demonstrate understanding of the properties, preparations and uses of colloids. - Classify colloids.
- Discuss the methods and principles applied in purifying colloids as in dialysis.
- Prepare useful colloids.
11: Appreciate the importance of colloids in daily life. - Explain how the properties of colloids are utilized in technology.
- Evaluate the importance of colloids to daily life.
- Describe the biological and environmental impact of colloids like aerosols sprays, hair gel and smoke.
- Relate the property of gas mixtures to air pollution.
Gases 12: Demonstrate understanding of the behavior of gases. - Explain the properties and behavior of gases based on kinetic molecular theory State the relationship among molecular interactions and phases of matter.
- Compare the diffusion of gases at standard pressure and temperature.
- Infer the relationship between the rate of diffusion and the molecular mass of a substance.
- Derive from given data the relationship between volume and pressure of a confined gas at constant temperature.
- Derive from given data the relationship between volume and temperature of a confined gas at constant pressure.
- Relate the concept of mole to volume of gases.
- Define the variables that describe the state of a gas (V, P, T, n)
13: Demonstrate problem solving skills using mathematical calculations. - Solve problems involving Boyle's, Charles', Avogadro's, Dalton's law of partial pressure.
14: Understand gas laws and principles involved in some technologies. - Cite safety measures to be observed in storing gases and volatile liquids.
- Apply gas laws in explaining daily occurrences.
- Enumerate and explain some technologies such as pressure cooker, bicycle pump, etc. (apply the KMT to explain some technology such as pressure cooker, bicycle pump, etc.)
- Relate the properties of gases to air pollution.
Inside the Atom. 15: Appreciate the contributions of early scientists in the development of atomic theory. - Recognize the significance of the contributions of early scientists in the development particularly the Laws of Conservation of mass, Definite Composition and Multiple Proportion
- Explain how radioactive elements are utilized in the diagnosis/treatment of diseases, the risks involved and the methods of protection
16: Demonstrate understanding of the structure of the atom. - Explain Dalton's atomic theory.
- Explain the law of chemical changes in terms of Dalton's atomic theory.
- Discuss what cathode rays and radioactivity reveal about the atom.
- Explain Rutherford's experiment to confirm the existence of the nucleus.
- Name and describe the sub atomic particles.
- Determine the number of protons, number of neutrons and number of electrons in an atom/ion.
- Relate atomic mass to the relative abundance of isotopes.
- Explain how the emission spectra of elements provide evidence for the existence of energy levels, and that electrons have definite energy levels.
- Describe the reactivity of the atom in terms of its valence electrons.
Order among Elements. 17: Demonstrate understanding of the properties of elements based on periodic atomic properties. - Name the elements given the chemical symbol.
- State the basis of the arrangement of elements in the periodic table.
- Use the periodic table to predict the chemical behavior of an element.
- Relate the number of valence electrons of elements to their group number in the periodic table.
- Infer trends in atomic sizes, ionization energy, metallic and nonmetallic properties and electronegativity across the period and down the family.
18: Demonstrate understanding of the properties of elements based on periodic atomic properties. - Enumerate and describe the properties of elements and their uses.
- Explain the importance of knowing the properties of elements and how they are applied particularly in modern technologies and those concerning the environment.
- Discuss the importance of some alkali metals, alkaline earth metals and transition metals in the human body.
Ties That Chemically Bind. 19: Understand how atoms combine. - Illustrate the formation of ionic, covalent and metallic bonds.
- Relate the type of bond formed between two or three elements to their location in the periodic table.
- Deduce which atoms tend to form covalent bonds or ionic bonds given the electronegativity values of the elements.
- Write formulas of covalent and ionic compounds.
- Distinguish between molecular and empirical formulas
- Compare and contrast polar and non polar covalent bonds.
- Enumerate and explain the forces of attraction that exists between molecules.
20: Demonstrate understanding of chemical bonds and how they relate to the properties and uses of compounds. - Discuss the biological importance of certain ions to the human body and in the environment.
- Relate the properties of metals to the type of bond formed.
Changes in Matter. 21: Appreciate the practical applications of phase/chemical changes. - Explain the application of phase/chemical changes used at home, in the community and industry.
- Recognize the importance of these applications in technologies that help improve the quality of life.
- Evaluate evidences of chemical changes.
22: Demonstrate understanding of the laws governing chemical changes. - Convert number of moles to mass or vice versa and to the number of particles (atoms, ions, molecules) or vice versa.
- Derive the chemical formula of a compound, given the mass ratio and the atomic masses of the elements present.
- Explain the Law of Conservation of Mass.
- Determine the percentage composition of a compound.
23: Demonstrate the ability to use symbols, formulas and chemical equations in explaining chemical equations. - Discuss the four general types of chemical reactions.
- Explain the implied information derived from a balanced equation.
- Classify chemical reactions given balanced chemical equation.
- Identify chemical equations involved in chemical processes as in soap making and car batteries.
Change, Energy and Time. 24: Demonstrate understanding of how chemical reactions occur. - Differentiate exothermic from endothermic reactions.
- Enumerate and explain the factors affecting rates of chemical reactions.
- Describe chemical reactions taking place in the decay of foods, growth of plants, digestion of foods, etc.
25: Appreciate the importance of controlling rates of reactions in technology. - Explain the application of Heats of Reactions to commercial and industrial processes.
- Explain how the factors affecting rates of chemical reactions are applied in food preservation, control of fire, pollution, corrosion and materials production.
- Recognize the importance of controlling rates of reactions in technology.
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