3. Denmark wants to explain to his brother about the difference between homogeneous and heterogeneous mixtures. Which of the following group of substance can be used to explain both concepts? a. water, alcohol and salt C. water, salt and sand b. pebbles, sand and alcohol d. oil, water and sand
4. Eula mixed 100 grams of salt in a 100 ml of purified water. She observed that there are still undissolved particles even if she keeps on stirring it. Which statement could best explain this? a. Salt cannot be dissolved in water c. The solution is unsaturated b. The solution is saturated d. Purified water is a weak solvent​

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