Physical and Chemical Changes
Main information
Teacher: Miguel Tomás Rodas Oliva
Course/Level: 4º ESO
Subject: Physics & Chemistry
DU Title: Physical and chemical changes
Learning outcomes - Evaluation criteria
1. To understand the chemical reaction mechanism and to deduce the conservation of mass law based on the concept of the atomic rearrangement.
2. To recognise the amount of substance as a fundamental measure, and to recognise the mole as its unit in the International System of Units.
3. To perform stoichiometric calculations with pure reactants, starting from the adjustment of the corresponding chemical equation.
4. To identify acids and bases and to measure their strength using pH.
5. To understand and to appreciate the importance of synthesis, combustion and neutralisation reactions in biological processes, daily and industrial applications, as well as their environmental impact.
Subject content
- Chemical reactions and equations.
- Reactions mechanism, rate and energy.
- Amount of substance: mole.
- Molar concentration.
- Stoichiometry calculus.
- Particularly relevant reactions.
Language content - Communication
Vocabulary
Nouns:
Changes, Substance, Reaction, Reagent, Reactants, Products, Mass, Volume, Atom, Molecule, Concentration, Molarity, Solute, Solvent, Solution, Stoichiometry, Equation, Acid, Base, Neutralization, Combustion, Synthesis.
Adjetives
Chemical, Physica, Molar, Strong, Weak
Verbs
React, Adjust, Even, Balance, Add, Substract, Multiply, Divide
Constructions
Law of conservation of mass, Kinetic theory of gases, Amount of substance, Avogadro constant, Standard state
Structures
Comparatives (higher than, lower than, equal than, …)
Discourse type
Reading, writing, speaking, mediation
Language Skills
Reading, writing, speaking, mediation
Contextual and cultural elements
This is suposed to be one of the most important topics of the course. Chemical reaction knowledge is the border between elementary science and advanced one. And dominating all this kind of reactions, equations and concepts in both L1 and L2 will give the students a huge power when they face future science degrees.
We have to take into account that Physics and Chemistry is an elective subject.
Cognitive (thinking) processes
Understand, relate, calculate, estimate, show results propperly
Tasks
Listen and understand the most basic concepts of the unit
Apply these concepts to actual exercises, by explaining or calculating
Show results both writing and speaking properly
Activities
Initial evaluation by simple concept digital test
Reading and speaking theory
Developing exercises by using L2
Explaining virtual pH experiments and showing and sharing results
Metodology
Organization and class distribution
The methodology will be active and participatory; in addition, it must facilitate both individual and group learning.
There won't be any difference between a normal distribution to this unit one. The speaking process will be taking part by showing the whole class their results at blackboard, or working in pairs, sharing vocabulary and expresions.
The unit is suposed to be 8 sessions long, adding an extra one that will be used as individual evaluation.
Timing
Key competences
Linguistic Communication
STEAM competences
Initiative and Entrepreneurship
Learning to Learn
Evaluation (Both criteria and instruments)
- Evaluation criteria
Understand the mechanism of a chemical reaction and deduce the law of conservation of mass from the concept of the atomic rearrangement that occurs in a chemical reaction. atomic rearrangement that takes place
Interpret equations thermochemical equations and distinguish between endothermic and exothermic and exothermic reactions
Recognise the quantity of substance as a fundamental and the mole as its unit in the International System of Units.
Carry out stoichiometric calculations with pure reactants assuming a complete yield of the reaction, starting from the adjustment of the corresponding chemical equation.
Identify acids and bases, know their chemical behaviour and measure their strength using indicators and the digital pH meter
- Evaluation instruments
Continuous assessment of each student with different oral and written test, every other week. At the end of the topic, the students will take a cumulative test.
Attached
Webmix with all resources Sybaloo:
Session 4 Simulation
Session 6 Simulation
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