Some Basic Concepts of Chemistry — Flashcards
CBSE · Class 11 · Chemistry
72 flashcards for Some Basic Concepts of Chemistry (CBSE Class 11 Chemistry) to test yourself on key terms and facts. Sample: "What is chemistry?"
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What is chemistry?
Answer
Chemistry is the branch of science that studies the preparation, properties, structure and reactions of material substances.
रसायन विज्ञान क्या है?
Answer
रसायन विज्ञान विज्ञान की वह शाखा है जो पदार्थीय पदार्थों की तैयारी, गुण, संरचना और अभिक्रियाओं का अध्ययन करती है।…
रसायन विज्ञान को परमाणुओं और अणुओं का विज्ञान क्यों कहा जाता है?
Answer
सभी पदार्थ परमाणुओं और अणुओं से बने होते हैं। रसायन विज्ञान उनके संघटन, संरचना, गुणों और अभिक्रियाओं में होने वाले परिवर्तनों का अध्ययन करता है।…
Why is chemistry called the science of atoms and molecules?
Answer
All substances are made of atoms and molecules. Chemistry studies their composition, structure, properties and the changes they undergo in reactions.
What are the three states of matter?
Answer
Matter exists in three physical states: solid, liquid and gas. Solids have definite shape and volume; liquids have definite volume but not definite shape; gases have neither definite shape nor definit…
पदार्थ की तीन अवस्थाएँ क्या हैं?
Answer
पदार्थ तीन भौतिक अवस्थाओं में पाया जाता है: ठोस, द्रव और गैस। ठोसों का निश्चित आकार और आयतन होता है; द्रवों का निश्चित आयतन होता है पर निश्चित आकार नहीं होता; गैसों का न तो निश्चित आकार होता है और न न…
कण स्तर पर ठोस, द्रव और गैस में क्या अंतर है?
Answer
ठोसों में कण बहुत पास-पास और व्यवस्थित होते हैं। द्रवों में कण पास होते हैं, लेकिन वे इधर-उधर चल सकते हैं। गैसों में कण बहुत दूर-दूर होते हैं और स्वतंत्र तथा तेज़ी से चलते हैं।…
How are solids, liquids and gases different at the particle level?
Answer
In solids, particles are very close and orderly. In liquids, particles are close but can move around. In gases, particles are far apart and move freely and fast.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
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