Why evaporation of water is a physical change

Evaporation is a physical change it is not a chemical change. Explanation: It is a physical change because it is going from the liquid phase to the gas phase. Simon Moore. Dec 7, Explanation: Evaporation does not result in any chemical reaction, nor any breaking or making of chemical bonds. Related questions How can you increase the speed of a chemical change? What is a chemical change? How are physical changes different from chemical changes?

They are more attuned to effects than to charting the changes to matter that accompany these effects. Similarly, they will put entities such as heat, or properties such as coldness, in the same category as dampness or fog.

The task of the adult, therefore, in engaging students in these activities, is to learn to listen for these ambiguities in language, and to ask questions that challenge the children to focus on what is happening in terms of changes to matter, and to model through the discussion the language of these changes.

View the full topic, including the activities. View the external links for this topic. Skip to content. Introduction Many of the activities in this topic focus on counter-intuitive effects, or at least effects that have an element of surprise and charm. Key concepts of physical changes to matter The activities in this topic are designed to explore the following key concepts: Early years Substances can be solid, liquid or gas, or mixtures of these.

Solids hold their shape, liquids flow and settle in containers, gases take up space in containers. Melting involves a change from a solid to a liquid, caused by heating. For a pure substance such as wax or ice, melting is reversible.

Some substances, when heated, burn rather than melt, or melt but cannot be changed back e. Melting is distinct from mixing or dissolving, which involve adding a liquid. A condensation is a process to turn a gas into liquid by cooling.

Related questions How do I determine the molecular shape of a molecule? What is the lewis structure for co2? What is the lewis structure for hcn? How is vsepr used to classify molecules? What are the units used for the ideal gas law? How does Charle's law relate to breathing?