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Substance and its Nature Video Lecture | General Awareness for SSC CGL

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FAQs on Substance and its Nature Video Lecture - General Awareness for SSC CGL

1. What is the definition of a substance in the context of chemistry?
Ans. A substance in chemistry is a form of matter that has a constant composition and distinct properties. It cannot be separated into simpler substances by physical means.
2. How is the nature of a substance determined?
Ans. The nature of a substance is determined by its chemical composition, physical properties, and behavior under different conditions such as temperature and pressure.
3. Can substances exist in multiple states of matter?
Ans. Yes, substances can exist in different states of matter such as solid, liquid, and gas depending on the temperature and pressure they are subjected to.
4. What are some examples of substances commonly encountered in daily life?
Ans. Examples of substances commonly encountered in daily life include water (H2O), salt (NaCl), sugar (C6H12O6), and oxygen (O2).
5. How do chemical reactions affect the properties of a substance?
Ans. Chemical reactions can change the properties of a substance by rearranging the atoms and molecules that make up the substance, leading to the formation of new substances with different properties.
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