1)Fill in the blanks. In a liquid, particles are _____arranged. They move about in ____ directions and slide over one another. Can I say "irregularly" & "any" as the answers? I know "random directions" is better, but can we accept "any directions"?
2) When water at 30ËšC is heated,
Water(30ËšC)-->Water(100ËšC)-->Water Vapour(100ËšC)
How do you explain Water(100ËšC)-->Water Vapour(100ËšC)?
random is better. Any indicates they all could move in the same direction.
The water is boiling, changing to steam.
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The particles in a can slide past one another
it is a molecule
1) In a liquid, particles are __randomly__ arranged. They move about in __random__ directions and slide over one another. While "irregularly" may imply a lack of pattern, it does not accurately describe the random movement of particles in a liquid. "Any directions" is not an appropriate answer because it suggests that particles can move in all directions, including those that are physically impossible within the liquid. Therefore, "random directions" is the most appropriate answer.
2) The transition from Water(100ËšC) to Water Vapour(100ËšC) can be explained by the process of evaporation. When water reaches its boiling point at 100ËšC, the thermal energy applied to the liquid overcomes the intermolecular forces that hold the water molecules together. As a result, the water molecules gain enough energy to break away from the liquid phase and enter the gas or vapor phase. This transition from the liquid state to the vapor state is known as evaporation or vaporization. Therefore, the process can be represented as Water(100ËšC) --> Water Vapour(100ËšC).