1. Waleed is learning about organic chemistry in action. He discovers that many medicines are organic compounds. Which of the following is an organic compound used as a medicine?
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Ch 1 + Chapter 2: Matter
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2. Sam is preparing a solution where the solvent is alcohol and the solute is iodine. The resulting mixture is used as an antiseptic. What type of solution is this based on the solvent?
3. Hina is studying a pure substance that cannot be broken down into simpler substances by chemical means. She is reading about the periodic table. What is this type of substance called?
4. Emma is studying the density of an unknown liquid. She measures its mass and volume and finds that its density is 0.8 g/cm³. She compares it to water (1.0 g/cm³). Will this liquid float on water?
5. Amina has a glass of orange juice with pulp. The pulp particles are visible and will eventually settle at the bottom if left undisturbed. This is an example of:
6. Waseem is studying the properties of matter. He observes that a solid has a fixed shape and volume. What is the arrangement of particles in a solid?
7. Which branch of chemistry deals with carbon compounds?
8. Liquids have:
9. Bilal is doing an experiment with a substance that takes the shape of its container but has a definite volume. He pours it from a beaker into a graduated cylinder, and it flows easily. What state of matter is Bilal working with?
10. Which of the following is an allotrope of carbon?