What is the study of substances, their properties, and how they react with each other called? |
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True or False: Alchemists successfully turned lead into gold using the philosopher's stone. |
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False. Alchemists believed they could turn lead into gold, but they were not successful. |
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Which chemical is commonly used as a food preservative to stop bacteria from growing? |
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Fill in the blank: The ______ is a magical substance that alchemists believed could turn metals into gold. |
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He discovered the role of oxygen in combustion and introduced the Law of Conservation of Mass. |
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False. Chemistry plays a significant role in many areas of daily life, including food, medicine, and cosmetics. |
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Riddle: I am found in your medicine cabinet, reducing pain and fever, and I come in forms like tablets and liquids. What am I? |
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Fill in the blank: ______ are chemicals that give crops the nutrients they need to grow better. |
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False. Synthetic fibers are generally stronger and more durable than natural fibers. |
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What is the chemical process of changing raw food into ready-to-eat products called? |
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Riddle: I am used in cosmetics to beautify and clean the skin, and I often come in creams and powders. What am I? |
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True or False: The Iron Pillar in Delhi has rusted over the years due to weather. |
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False. The Iron Pillar has not rusted due to a protective layer of crystalline iron hydrogen phosphate. |
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