Unit A: Energy and Matter in Chemical Change
Overview: Chemical changes involve energy and transformations of matter. A knowledge of the underlying structure of matter and the basic chemical species is important in understanding chemical changes. As students explore the properties of molecular and ionic compounds, including acids and bases, they begin to appreciate the need for a classification scheme and a system of nomenclature. Students classify, name compounds and rite balanced chemical equations to represent chemical changes. As well, students are introduced to the law of conservation of mass and the mole concept.
This Unit Builds On:
Course Focus: We will spend ~25% of the course on this unit.
Students Will:
Key Concepts:
This Unit Builds On:
- Grade 7 Science, Unit C: Heat and Temperature
- Grade 8 Science, Unit A: Mix and Flow of Matter
- Grade 9 Science, Unit B: Matter and Chemical Change
- Grade 9 Science, Unit C: Environmental Chemistry
Course Focus: We will spend ~25% of the course on this unit.
Students Will:
- Describe the basic particles that make up the underlying structure of matter, and investigate related technologies.
- Explain, using the periodic table, how elements combine to form compounds,, and follow IUPAC guidelines for naming ionic compounds and simple molecular compounds.
- Identify and classify chemical changes, and write word and balanced chemical equations for significant chemical reactions, as applications of Lavoisier's law of conservation of mass.
Key Concepts:
- how chemical substances meet human needs
- Workplace Hazardous Materials Information System (WHMIS) and safe practices
- International Union of Pure and Applied Chemistry (IUPAC) nomenclature, ionic and molecular compounds, acids and bases
- evidence of chemical change
- role and need for classification of chemical change
- writing and balancing equations
- law of conservation of mass and the mole concept