Uso de recursos educativos abiertos para AICLE: Matter: pure substances and mixtures.

TITLE: Matter : pure substances and mixtures.

Subject: Physics and Chemistry

Course: 3º ESO

Language: English

INTRODUCTION.

I have never taught my subject in English with AICLE methodology, I have chosen this topic because it´s very practical and intuitive and students always enjoy these classes.

The most important thing about the lesson is learning the difference between pure substances and mixture and homogeneous and heterogeneous mixture.

OBJECTIVES.

-To classify as pure susbtances and mixtures.

-To recognise different types of mixtures.

-To know about different types of separating techniques .

- To understand the characteristics of homogeneous and heterogeneous mixtures.

- To describe the most common techniques to separate substances in a mixture.

- To value the use and the importance of chemistry in our society.

- To understand the backwashes of chemistry in living beings and the environment.

LANGUAGE CONTENTS.

VOCABULARY

Nouns: Matter , element , compound , mixture , pure substance , solution , solvent , solute , filtration ,decantation ,distillation , solubility .

Verbs: to measure, to adapt, to heat, to avoid, to filter, to float, to compress

Adjectives: avalaible, absorbent, plastic, elastic, transparent, opaque…

Prepositions: by,of, inside…

STRUCTURES

· Routines: communicative skills

What color / size it is ?, what is its natural state ?, what type of substance ?, is it a mixture ?...

It is measured in…

It is fabricated by …

It is made up of…

METHODOLOGY

The methodology will be active and participative. Students will work in groups to practice their oral skills, they will listen to videos, write reports and manipulate lab equipment.

SESSION 1.

· Brainstorming about the topic.

· Classification of matter as pure substances or mixtures according to the number of substances.

http://studyjams.scholastic.com/studyjams/jams/science/matter/changes-of-matter.htm

http://www.teachertube.com/video/mixtures-and-solutions-183575

· Answering questions:

Question	Answer
What´s the name of a substance formed only by one component ?
What´s the name of a substance formed by two substances in which you can distinguish them?
Is milkshake a homogeneous or heterogeneous mixture?
Is paella a homogeneous or heterogeneous mixture?
Write two homogeneous mixtures
Write two heterogeneous mixtures

SESSION 2.

· To make a concept mapping about pure substances and mixtures:

- https://www.brainpop.com/english/writing/conceptmapping/

- https://www.brainpop.com/make-a-map/?topic=/english/writing/conceptmapping/

SESSION 3.

· Difference between simple and compound substance, and homogeneous and heterogeneous mixture

http://www.teachertube.com/video/junior-cert-science-experiments-chemistry-2-of-4-241969

· With salt, sugar, water, oil, sand, alcohol, students have to practise the different types of mixtures.

	Components	Separation Technique
Homogeneous solid-solid
Homogeneous liquid-liquid
Homogeneous solid-liquid
Herogeneous liquid –liquid
Heterogeneous solid-liquid
Heterogenous liquid-liquid

SESSION 4.

· Separation techniques for heterogeneous mixtures: Filtration and decanting.

· Separation techniques for homogeneous mixtures: evaporation and distillation.

· http://mocomi.com/separation-of-substances/

SESSION 5.

· Lab experiment : Separation of a mixture with three or more components. In groups of 4 , students have to resolve how to separate the mixture.

· Calculate the concentration of solution : g/l and %

	Concentration ( g/l )	Concentration ( % weigh)
750 ml of water and 270 g of salt
150 ml of solution and 15 g of nitrate
3 l of solution and 56 g of sulfate