Prática de Shadowing: Science in English #3 | The Periodic Table - Aprenda a falar inglês com vídeo

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Ahem.
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Good morning, everyone.
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Today we are going to learn about the periodic table.
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Think of it as a map of all known elements.
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Just like a map helps you find places, the periodic table helps scientists organize the building blocks of matter.
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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.
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Yet, those 26 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 everything around us.
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So where can we find all these elements?
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We can find them in the periodic table.
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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 the periodic table is.
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You will learn about atomic number and atomic mass.
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You will also identify groups and periods.
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Finally, you will recognize metals, nonmetals, and metalloids.
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So what is the periodic table?
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It is a chart that organizes all known elements.
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Each element has four important pieces of information.
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Its name, its chemical symbol, its atomic number, and its atomic mass.
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Now let's look more closely at these numbers.
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The atomic number is like an ID card.
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It tells us exactly which element it is.
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For example, hydrogen has an atomic number of one.
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Carbon has an atomic number of six.
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has an atomic number of 1.
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Carbon has an atomic number of 6.
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Gold has an atomic number of 79.
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The atomic mass tells us how heavy an atom is compared with a hydrogen atom.
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Not all elements are the same.
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Scientists divide them into three main categories.
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Metals Metals are usually shiny and conduct electricity well.
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Nonmetals do not conduct electricity well.
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Metalloids have properties of both metals and nonmetals.
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Each category has its own unique properties.
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Now let's learn how to read the periodic table.
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The horizontal rows are called periods.
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The vertical columns are called groups.
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Here is an important idea.
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Elements in the same group have similar properties.
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They behave in similar ways during chemical reactions.
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Let's look at a few examples.
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Group 1 contains the alkali metals.
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They are very reactive.
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Group 17 contains the halogens.
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They are reactive non-metals.
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Group 18 contains the noble gases.
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These elements are very stable and rarely react with other elements.
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Let's review what we have learned today.
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The periodic table organizes all known elements.
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Each element has an atomic number and an atomic mass.
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The table is arranged into periods and groups.
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Elements in the same group have similar properties.
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The periodic table helps scientists understand and compare all known elements.
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Thank you for listening.
📺 Mesmo canal
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Vocabulário e dicas de fala para esta lição

Esta aula de conversação de nível B1 usa o vídeo “Science in English”. As palavras que mais se repetem: element, atomic, table, periodic, metals. Este vídeo tem 57 frases e 427 palavras para praticar shadowing. A fala dura 3:40. O falante mantém um ritmo estável de cerca de 117 palavras por minuto, confortável para o shadowing. Apenas 81% das palavras estão entre as 3.000 mais comuns do inglês, por isso o vocabulário é exigente.

Vocabulário principal deste vídeo

As 15 palavras mais avançadas do vídeo, com pronúncia e significado:

PalavraPronúnciaSignificado
atomic adjetivo/əˈtɑː.mɪk/atômico, atómico
periodic adjetivo/ˌpɪɹiˈɑdɪk/periódico
organize verbo/ˈɔɹɡənaɪz/organizar
scientist substantivo/ˈsaɪəntəst/cientista
metalloid substantivo/ˈmɛtəlɔɪd/metaloide
atom substantivo/ˈætəm/átomo
hydrogen substantivo/ˈhaɪdɹəd͡ʒ(ə)n/hidrogênio, hidrogénio
alkali substantivo/ˈæl.kəˌlaɪ/álcali
halogen substantivo/ˈhæl.ə.d͡ʒən/halogênio
horizontal adjetivo/ˌhoɹəˈzɑn.təl/horizontal
behave verbo/bɪˈheɪv/comportar-se
arrange verbo/əˈɹeɪnd͡ʒ/arranjar, organizar
divide verbo/dɪˈvaɪd/dividir, separar
combine verbo/kəmˈbaɪn/combinar
vertical adjetivo/ˈvɝ.tɪ.kəl/vertical

Frases que vale a pena repetir

Frases curtas e completas do vídeo que você pode usar na conversa do dia a dia:

  • Let's begin with a simple comparison.
  • Let's begin with our learning objectives.
  • Let's look at a few examples.
  • Let's review what we have learned today.

Gramática neste vídeo

As estruturas que o falante mais usa, com as palavras exatas do vídeo:

EstruturaNo vídeo
Voz passiva be + particípio passado — o foco está no que acontece, não em quem fazis compared · are called · is arranged
Futuro com “will” will + verbo — uma decisão, promessa ou previsãowill understand · will learn · will also identify

Pronúncia para ficar de olho

  • Palavras longas — acerte a sílaba tônica: periodic /ˌpɪɹiˈɑdɪk/, horizontal /ˌhoɹəˈzɑn.təl/

Sons difíceis para falantes de português:

  • Consoante final — sem acrescentar um “i” depois: atomic /əˈtɑː.mɪk/, periodic /ˌpɪɹiˈɑdɪk/, scientist /ˈsaɪəntəst/, metalloid /ˈmɛtəlɔɪd/, divide /dɪˈvaɪd/
  • /l/ final — a língua toca o céu da boca, não vira “u”: horizontal /ˌhoɹəˈzɑn.təl/, vertical /ˈvɝ.tɪ.kəl/, noble /ˈnoʊbəl/, symbol /ˈsɪmbəl/
  • /h/ — um sopro suave, diferente do “r”: hydrogen /ˈhaɪdɹəd͡ʒ(ə)n/, halogen /ˈhæl.ə.d͡ʒən/, horizontal /ˌhoɹəˈzɑn.təl/, behave /bɪˈheɪv/

Como praticar com este vídeo

  1. Ouça o vídeo inteiro uma vez sem falar e anote as palavras que você não conhece.
  2. Faça shadowing frase por frase na velocidade normal, repetindo cada uma até o seu ritmo ficar igual ao do falante.
  3. Grave a sua voz e compare com o original, prestando atenção a palavras como atomic, periodic, organize.

O que é a Técnica de Shadowing?

Shadowing é uma técnica de aprendizado de idiomas com base científica, originalmente desenvolvida para o treinamento de intérpretes profissionais. O método é simples, mas poderoso: você ouve áudio em inglês nativo e repete imediatamente em voz alta — como uma sombra seguindo o falante com 1-2 segundos de atraso. Pesquisas mostram melhora significativa na precisão da pronúncia, entonação, ritmo, sons conectados, compreensão auditiva e fluência na fala.

Técnica de shadowing: leia o guia completo passo a passo →