The state of matter (solid, liquid, gas) reflects the strength of intermolecular forces. Solids have the strongest forces, liquids have intermediate forces, and gases have the weakest forces. Sugar is a solid at room temperature and pressure, while the other substances are liquids or gases.
At a given temperature and pressure, the force of attraction among the molecules will be highest in case of:
Asked in UPSC Geoscientist 2020 · Topic: Physical and Chemical Changes, Solution (Definition and Characteristics of Physical Changes)
More Chemistry questions
- Which one of the following statements is correct about camphor and ammonium chloride?
- Number of states of matter known so far is:
- नीचे अवस्था पǐरिवर्तन के कु छ प्रकारि Ǒदिए गए हैं : A. जल का वाष्पीकरिण B. मोमबत्ती का जलना C. जल में चीनी का घुलना D. जल के वैद्यु अपघटन द्वारिा हाइड्रोजन औरि ऑक्सीजन को बनाना सही ͪवकल्प को चुǓनए :
- Following are some processes involving changes of state : A. Evaporation of water B. Burning of candle C. Dissolution of sugar in water D. Electrolysis of water to form hydrogen and oxygen Select the correct option :
- Consider the following statements: 1. Evaporation is a surface phenomenon, meaning particles from the surface change into vapour state. 2. Boiling is a bulk phenomenon, meaning particles from the bulk of the liquid change into vapour state. 3. Deposition is the change of gaseous state directly to solid state without changing into liquid state. 4. The state of matter can only be changed by changing its temperature. Which of the following is correct?
- Which of the following are true about nanomaterials? (a) The properties strongly depend on the surface atoms. (b) They have large surface area. (c) Nanoparticles have typical sizes > 100 nm. (d) We cannot see particles of nanomaterials from the naked eye. Select the correct answer using the code given below :
- The temperature at which a solid melts to become a liquid at the atmospheric pressure is called its melting point. The melting point of a solid is an indication of
- When pure water boils vigorously, the bubbles that rise to the surface are composed primarily of