Shadowing-Übung: Science in English #4 | Compounds and chemical formulas - Englisch Sprechen Lernen mit Video
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Good morning, everyone.
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Today we are going to learn about compounds and chemical formulas.
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We will discover how different elements combine to form new substances.
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Let's get started.
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Let's begin with a simple comparison.
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The English language has only 26 letters, yet those letters can create millions of words and sentences.
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Nature is very similar.
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About 118 elements combine to create millions of different substances.
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So, what do we call these new substances?
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Today, we will find out.
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Let's begin with our learning objectives.
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By the end of this lesson, you will understand what a compound is.
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You will learn about chemical bonds.
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You will recognize a molecule.
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You will also learn how to read chemical formulas.
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So what is a compound?
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A compound is a substance made from the chemical combination of two or more different elements.
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When different elements join together, they form a completely new substance.
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Let's look at some examples.
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Water, or H2O, is a compound.
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It is made from hydrogen and oxygen.
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carbon dioxide, or CO2, is another compound.
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It is made from carbon and oxygen.
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Compounds are all around us in our everyday lives.
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How do atoms stay together?
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They are connected by a chemical bond.
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A group of bonded atoms is called a molecule.
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A water molecule has two hydrogen atoms and one oxygen atom.
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A chemical formula shows the number of atoms in one molecule.
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The small number is called a subscript.
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It tells us how many atoms of each element are present.
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For example, H2O, CO2, and C12H22O11 are all chemical formulas.
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Now let's compare.
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H2O is a compound.
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CO2 is also a compound.
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But O2 is not a compound.
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Why?
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Because it contains only one element.
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A compound must contain two or more different elements.
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Let's review what we have learned today.
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Compounds are made from two or more different elements.
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Atoms are connected by chemical bonds.
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A molecule is the smallest unit of many compounds.
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Chemical formulas show the fixed ratio of atoms.
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Thank you for listening.
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Wortschatz und Sprechhinweise zu dieser Lektion
Dieses Video enthält 45 Sätze und 341 Wörter zum Nachsprechen. Der gesprochene Teil dauert 2:51. Der Sprecher spricht gleichmäßig mit etwa 120 Wörtern pro Minute – ein angenehmes Tempo fürs Shadowing. Nur 74 % der Wörter gehören zu den 3.000 häufigsten im Englischen, der Wortschatz ist also anspruchsvoll.
Wichtiger Wortschatz in diesem Video
15 weniger häufige Wörter aus dem Video, mit Aussprache und Bedeutung:
- compound /ˈkɑmpaʊnd/ (Substantiv) — Mischung, Verbindung. Anything made by combining several things.
- element /ˈɛləmənt/ (Substantiv) — Element. One of the simplest or essential parts or principles of which anything consists, or upon which the constitution or fundamental powers of anything are based.
- atom /ˈætəm/ (Substantiv) — Atom. The smallest possible amount of matter which still retains its identity as a chemical element, now known to consist of a nucleus surrounded by electrons.
- formula /ˈfɔː.mjʊ.lə/ (Substantiv) — Formel. Any mathematical rule expressed symbolically.
- substance /ˈsʌbstəns/ (Substantiv) — Substanz, Stoff. Physical matter; material.
- molecule /ˈmɑ.lɪ.kjul/ (Substantiv) — Molekül. The smallest particle of a specific element or compound that retains the chemical properties of that element or compound; two or more atoms held together by…
- oxygen /ˈɑksɪd͡ʒən/ (Substantiv) — Sauerstoff, Oxygen. The chemical element (symbol O) with an atomic number of 8 and relative atomic mass of 15.9994. It is a colorless and odorless gas. Sometimes called elemental…
- connect /kəˈnɛkt/ (Verb) — verbinden. To join (to another object): to attach, or to be intended to attach or capable of attaching, to another object.
- combine /kəmˈbaɪn/ (Verb) — kombinieren, verbinden. To bring (two or more things or activities) together; to unite.
- hydrogen /ˈhaɪdɹəd͡ʒ(ə)n/ (Substantiv) — Hydrogen, Hydrogenium. The lightest chemical element (symbol H), with an atomic number of 1 and atomic weight of 1.008.
- everyday /ˈɛvɹiˌdeɪ/ (Adjektiv) — Alltags-, alltäglich. Appropriate for ordinary use, rather than for special occasions.
- lesson /ˈlɛs.ən/ (Substantiv) — Lehrstunde, Stunde. A section of learning or teaching into which a wider learning content is divided.
- compare /kəmˈpɛɚ/ (Verb) — vergleichen, komparieren. To assess the similarities and differences between two or more things [“to compare X with Y”]. Having made the comparison of X with Y, one might have found it…
- discover /dɪˈskʌvə/ (Verb) — entdecken. To find or learn something for the first time.
- ratio /ˈɹeɪ.ʃoʊ/ (Substantiv) — Verhältnis. A number representing a comparison between two named things.
Phrasal Verbs, die du hören wirst
- find out (Verb) — herausfinden, erfahren. To discover, as by asking or investigating.
- look at (Verb) — schauen. To observe or watch.
So übst du mit diesem Video
- Höre dir das ganze Video einmal an, ohne zu sprechen, und notiere die Wörter, die du nicht kennst.
- Sprich Satz für Satz in normaler Geschwindigkeit nach und wiederhole jeden, bis dein Rhythmus zum Sprecher passt.
- Nimm dich auf und vergleiche mit dem Original; achte dabei auf Wörter wie compound, element, atom.
Grammatik in diesem Video
Die Strukturen, die der Sprecher am häufigsten verwendet, mit den genauen Worten aus dem Video:
| Struktur | Im Video |
|---|---|
| Passiv be + Partizip Perfekt – wichtig ist, was geschieht, nicht wer es tut | is made · are connected · is called |
| Zukunft mit „will“ will + Verb – eine Entscheidung, ein Versprechen oder eine Vorhersage | will discover · will find · will understand |
Was ist die Shadowing-Technik?
Shadowing ist eine wissenschaftlich fundierte Sprachlerntechnik, die ursprünglich für die professionelle Dolmetscherausbildung entwickelt und durch den Polyglotten Dr. Alexander Arguelles populär gemacht wurde. Die Methode ist einfach aber wirkungsvoll: Du hörst englisches Audio von Muttersprachlern und wiederholst es sofort laut — wie ein Schatten, der dem Sprecher mit nur 1–2 Sekunden Verzögerung folgt. Anders als passives Hören oder Grammatikübungen zwingt Shadowing dein Gehirn und deine Mundmuskulatur, gleichzeitig echte Sprachmuster zu verarbeiten und zu reproduzieren. Studien zeigen, dass es Aussprachegenauigkeit, Intonation, Rhythmus, verbundene Sprache, Hörverständnis und Sprechflüssigkeit signifikant verbessert — was es zu einer der effektivsten Methoden für die IELTS Speaking-Vorbereitung und reale englische Kommunikation macht.