A sparkling lemon

Type of resource: website, you tube

Web address https://www.bimbicreativi.it/lesperimento-del-limone/https://www.youtube.com/watch?v=ODhhCRAMhVg&t=5s

Language: EN

Description

Formulating possible combinations of ingredients to see if they give rise to reactions

Scientific concept introduced

reaction, carbon dioxide, citric acid, bicarbonate, food colouring

Creative and critical thinking

Critical thinking:
– Analysis
– Observation

Creative thinking:

– Curiosity

Mathematical reasoning

Misuration

Scientific thinking

– Observing
– Asking questions
– Formulating hypotheses
– Analysing data
– Coming to conclusions
– Identifying phenomena, similarities and differences “

Learning how to learn

– To be able to list what is needed to reproduce the experiment illustrated by the teacher
– To ask oneself whether the same reaction can also take place with other ingredients and create the various combinations, to explain why this does not happen
– To identify the value of this experiment in everyday life

Additional

– Exchanging information
– Sharing opinions
– Knowing, observing and respecting the rules and participating in the construction of the rules

– Collaborating in a group and respecting everyone’s time “.

A sparkling lemon

Overall aims

maintain sustained attention during the execution of the experiment
hypothesise the results
formulating possible combinations of ingredients to see if they give rise to reactions
carry out the chemical reaction between citric acid and bicarbonate
remember the ingredients that gave rise to the reaction

Vocabulary – keywords should be understood

reaction, carbon dioxide, citric acid, bicarbonate, food colouring

Expected learning outcomes (operational aims)

the child/student will be able to:
– Reproducing the experiment carried out by the teacher
– Tell what happens during the chemical reaction between citric acid and bicarbonate.
– Explain why the lemon ‘fizzes’

the child/student will have exercised:
– Sustained attention
– Executive attention
– Active listening
– Metacognitive thinking

STEM skills – to which the learning unit is related to

CORE STEM SKILLS

Asking questions
Analysis
Drawing evidence-based conclusions
Reproducing the experiment
Evaluating the results of the experiment

ADDITIONAL SKILLS

Listening
Understanding
Cooperative work
Listening to the advice of others

Teaching methodologies/activity outline

Introduction:
The teacher will reproduce the experiment with the sparkling lemon in front of the children. During the performance, she will pause to allow the children to memorise the necessary tools and ingredients, to let them imagine the outcome of the experiment, and above all to reflect together at a metacognitive level. Afterwards, the children will reproduce the experiment in small groups, in order to directly experience what happens.

Activities:

After explaining the experiment to the pupils, the teacher gives them all the materials needed to carry out the experiment and guides them through the activity.

Materials:
chopping board
knife
two lemons
container
wooden stick
juicer
bicarbonate
food colouring
dish soap

Instructions:
take lemon and cut off the top;
Place the lemon in a container so that it lies straight and with the cut side up;
pour in a few drops of food colouring;
add a little dishwashing liquid;
put bicarbonate of soda over the opening;
Take the second lemon, cut it in half and squeeze it;
Now give the child a wooden stick and have him or her move it up and down inside the first lemon. The lemon will start to fizz due to the effect of the contact between citric acid and bicarbonate of soda;
for a greater scenic effect, pour in a little lemon juice

Conclusions:
At the end of the activity the children will have directly experienced that only the meeting of certain ingredients (reagents) gives rise to a reaction