- Question: What is a combination of two or more substances called?
Answer: Mixture
Explanation: A mixture is formed when two or more substances are combined without undergoing a chemical change. - Question: What type of mixture has a uniform composition throughout?
Answer: Homogeneous
Explanation: A homogeneous mixture has evenly distributed components, such as salt dissolved in water. - Question: What type of mixture has an uneven composition?
Answer: Heterogeneous
Explanation: A heterogeneous mixture has visibly different components, like a mixture of sand and iron filings. - Question: What is an example of a homogeneous mixture?
Answer: Solution
Explanation: A solution, such as sugar water, is a homogeneous mixture where solute particles are uniformly distributed. - Question: What is an example of a heterogeneous mixture?
Answer: Suspension
Explanation: A suspension, like muddy water, is a heterogeneous mixture where particles settle over time. - Question: What is the process of separating insoluble solids from a liquid using a filter?
Answer: Filtration
Explanation: Filtration is used to separate solid particles that do not dissolve in a liquid, like sand from water. - Question: What is the process of separating a solid from a liquid by heating?
Answer: Evaporation
Explanation: Evaporation removes the liquid component, leaving behind the dissolved solid, such as salt from seawater. - Question: What is the process used to separate two immiscible liquids?
Answer: Decantation
Explanation: Decantation separates immiscible liquids like oil and water by carefully pouring out the top layer. - Question: What is the process of separating different components of a liquid mixture based on boiling points?
Answer: Distillation
Explanation: Distillation separates liquids by heating them to different boiling points and condensing the vapors. - Question: What is the process of separating a solid from a liquid by spinning it at high speed?
Answer: Centrifugation
Explanation: Centrifugation is used to separate particles of different densities, such as separating cream from milk.
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