Grade 9 Science Q4 - Science of Materials
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This Grade 9 course develops investigative skills while explaining chemical change and atomic interactions. Students design experiments to identify new substances, use the periodic table to analyse valence electrons, model ionic, covalent and metallic bonds, and test properties like conductivity and melting point. Emphasising hands-on work, data recording, and clear explanations, it readies Filipino learners for higher chemistry and strengthens critical thinking and lab skills.
Meet Your Instructors
What you'll learn
- Carry out a valid and reliable scientific investigation to show the formation of a new substance, ensuring variables are correctly identified and controlled.
- Describe a valence electron and explain that the formation or breaking of existing bonds constitutes a chemical change leading to a new substance.
- Explain the formation of ions through electron transfer, write the chemical formula and chemical names of common ionic compounds, and show their crystalline structures using models.
- Explain the formation of covalent bonds through electron sharing, write the chemical formula and chemical names of common covalent compounds, and model their individual molecular structures.
- Explain the structure of metals and their characteristic properties by applying the metallic bonding (sea of electrons) model.
- Investigate, compare, and explain the properties (such as melting point, hardness, and electrical/thermal conductivity) of ionic, covalent, and metallic substances based on their type of bonding.