Chemisty: The states of matter

7 important questions on Chemisty: The states of matter

What is the heat source that causes the melting of:

ghee: the heat of the fire under the pan.

chocolate: your body

How can you explain melting in the particle theory?

when a solid is heated the particles get more energy. the energy makes the particles stronger and pushed each further away. if the solid is heated further, and the particles sliding over each other and become a liquid.

When goes the evaporation faster?

  1. if the temperature of a liquid is higher.
  2. if the air above the liquid is drier.

 

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How can you explain evaporation by the particle theory?

the particles in a liquid have different amounts of energy. the particles with the most energy move the fastest. high-energy liquid particles near the surface move so fast that they can break through the surface and escape into the air, forming a gas.

What is the particle theory whit boiling

when a liquid is heated, all the particles receive more energy and move more quickly. the fastest moving particles escape from the liquid surface or collect in the liquid form of bubbles.the bubbles rise to the surface and burst open into the air. the fast-moving particles released from the liquid form a gas.

How did the rate at which the temperature increased schange as it reached the boiling point?

its the same

How does the particle theory explains the condensation.

the particle in a gas possess a large amount of water. when the particles cooled down, they lose some energy. if the gas is cooles sufficiently, the particles lose so much energy that they cannot longer counce off each other when they meet. the particles now slide over each other and form a liquid.

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