3. Acids and bases – 3.5 What effect does acid have on teeth? (teacher instructions)
Text
Experimentation instructions:
Background information on the content and practical information on conducting the “What effect does acid have on teeth?" experiment.
Verfügbar in:
Englisch
Medientyp:
Text (169,3 kByte)
Letzte Aktualisierung:
24.10.2022
Lizenz:
Dieses Medium steht unter einer CC BY-SA 4.0 international Lizenz.
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Dieses Medium steht unter einer CC BY-SA 4.0 international Lizenz.
Was bedeutet das?
So verweisen Sie auf das Medium
Medienpaket:
Beschreibung:
Tooth enamel is the hardest material in our body, but very sensitive to acids. Acids are ingested with sour drinks or food or formed from sugar by bacteria in our mouth. Eggshells are made of a similar material as the teeth. In a model experiment with eggshells we are able to demonstrate how acid acts on teeth.
Eggshell consists of calcium carbonate which reacts with acids to form mostly carbon dioxide (forms bubbles) and soluble calcium acetate. After a few hours the shell has “disappeared”.
One item deals with „Technical application and vocational orientation“.
Eggshell consists of calcium carbonate which reacts with acids to form mostly carbon dioxide (forms bubbles) and soluble calcium acetate. After a few hours the shell has “disappeared”.
One item deals with „Technical application and vocational orientation“.
Dazugehörige Medien:
Lernobjekttyp:
Experiment
Fächer:
Biology; Chemistry
Klassenstufen:
Grade 7 to 9; Grade 10 to 13
Schultypen:
Middle/high school; Vocational training
Stichworte:
Acids; Agriculture; Base (chemistry); Medicine (medical science)
Bibliographie:
Siemens Stiftung Media Portal
Urheber/Produzent:
Dieter Arnold
Rechteinhaber:
© Siemens Stiftung 2022