WebJan 24, 2024 · This dissolution is easily identified as a physical change, because if the water is allowed to evaporate, the salt remains after all the water has evaporated, meaning it … WebDec 29, 2024 · Gasoline is a toxic and highly flammable liquid. The vapors given off when gasoline evaporates and the substances produced when gasoline is burned (carbon monoxide, nitrogen oxides, particulate matter, and unburned hydrocarbons) contribute to air pollution. Burning gasoline also produces carbon dioxide, a greenhouse gas.

Is evaporation a physical or chemical change? Socratic

WebSep 18, 2024 · Yes, evaporation is a physical change as it involves only the change of state of water molecules and not its chemical composition. What kind of reaction is evaporation? Evaporation is an endothermic process because water molecules must absorb heat from the surroundings to increase their kinetic energy. WebAug 21, 2014 · The evaporation of gasoline is a physical change from liquid to gaseous states. Because the chemical composition of the gasoline does not change, it is not chemical in nature. If... commoditization of technology

Changes of state - Solids, liquids and gases - BBC Bitesize

WebDec 13, 2024 · The evaporation of water is a physical change. When water evaporates, it changes from the liquid state to the gas state, but it is still water; it has not changed into … WebSep 17, 2024 · Evaporation occurs when liquid water changes into a gas. Evaporation is a physical change. Is evaporation a chemical? Yes, evaporation is a physical change as it involves only the change of state of water molecules and not its chemical composition. dth topup online