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Answer in short.1. What is a pure substance? Write the characteristics of a2. What is a suspension? Give examples.3. Write the examples of the following types of mixtures.(a) Solid-liquid mixture(b) Solid-gas mixture(c) Liquid-liquid mixture(d) Gas-gas mixture4. Why is it essential to separate mixtures?5. What is handpicking? Hemdpicking is a seperti |
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Answer» Answer: Explanation: 1. A pure substance is any substance which consists of a single type of molecule. Thus, all MOLECULES have same chemical nature. example: Iron, Hydrogen 2.A suspension is a mixture of two or more substances. In a suspension particles do not dissolve. example- micture of chalk and water, flour and water. 3. (a) Solid-liquid mixture- Mud and water (b) Solid-gas mixture- Dust, fine sand particles suspended in air. (c) Liquid-liquid mixture- Milk and water (d) Gas-gas mixture- Air around us is a mixture of various gases. 4.Many substances nowadays aren't found in their pure form. In order to use one element or compound from a mixture we need to SEPARATE the DIFFERENT molecules in a mixture. 5. Handpicking is a process of separation of slightly LARGER particles in a mixture by hand. example- STONE in rice ~HOPE THIS HELPS~ |
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