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Osmosis in Everyday Life

Molecules are always moving. Sometimes, molecules even move through membranes. Molecules tend to pass through semi-permeable membranes to an area where the solvent concentration is higher. This equalizes the concentration of materials on either side of the membrane. This process is called osmosis. Osmosis is an important chemical process with practical uses in everyday life. What is one use of osmosis?

Fresh vegetables have a high concentration of water molecules. During pickling, vegetables are placed in a brine—a mixture of water, salt, and seasonings. The skin acts as a semi-permeable membrane. Water molecules move out of the vegetables through the skin and into the brine, which equalizes the solvent concentration on either side of the membrane. This process is an example of osmosis, and it is why pickled vegetables stay crunchy.

Reverse osmosis is a process that uses pressure to force molecules into an area of lower solute concentration. We use reverse osmosis to remove salt and other particles from seawater. Afterward, we can drink the water!

Chemical processes like osmosis have a big effect on our everyday lives. For this reason, learning about how they work is important for our understanding of the world.

✅ 1. 반드시 정확히 읽어야 하는 단어 (발음 체크 리스트)

👉 틀리면 바로 감점 하는 핵심 단어들입니다.

📌 과학 핵심 어휘 (최우선)

• molecules
• membranes
• semi-permeable
• concentration 
• solvent
• osmosis
• reverse osmosis
• solute
• particles

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📌 실생활 + 설명 단어

• equalizes
• practical 
• vegetables
• pickling
• brine
• mixture
• seasoning
• crunchy

✅ 2. 끊어읽기(Chunking) 반드시 해야 하는 문장

👉 의미 단위로 끊지 않으면 감점

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📌 ① 기본 개념 문장

Molecules tend to pass through / semi-permeable membranes / to an area / where the solvent concentration is higher.

✔ 체크

• tend to pass through (동사구)
• semi-permeable membranes (한 덩어리)
• where절 끊기

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📌 ② 핵심 정의 문장

This equalizes / the concentration of materials / on either side of the membrane.

✔ 체크

• equalizes 뒤 끊기
• 긴 목적어 분리

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📌 ③ 오스모시스 설명

Water molecules move out of the vegetables / through the skin / and into the brine,

✔ 체크

• move out of A / through B / into C
  👉 “이동 경로” 3단계로 읽기

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📌 ④ 관계절 문장 (중요)

which equalizes the solvent concentration / on either side of the membrane.

✔ 체크

• which 앞 반드시 끊기
• 뒤는 하나의 설명 덩어리

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📌 ⑤ 역삼투 설명

Reverse osmosis is a process / that uses pressure / to force molecules / into an area of lower solute concentration.

✔ 체크

• that절 끊기
• to부정사 끊기
• into 이하 길게 묶기

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📌 ⑥ 결과 문장

Afterward, / we can drink the water!

✔ 체크

• Afterward 부사 강조