Iwant to ask ???(20marks)!!!!!!Quick 要解釋

2008-04-17 2:13 am
Puts a samll piece of ice into a beaker and keeps it at room temperature for 30 minutes .She then heats the beaker until the beaker becomes empty.

Use the particle theory to explain why the beaker finally (

回答 (1)

2008-04-17 3:23 am
✔ 最佳答案
water molecule in ice vibrate very slowly. when it keeps at room
temperature, it absorbs heat from the surroundings.
it first melts into water. then the temperature will then increase.
the water molecules vibrate faster than before.
when the beaker is heated. much energy is supplied to
the water. so the water vibrates faster and faster.
so the temperature increase and increase.
when the boiling point is reached, water will become steam.
steam is a gaseous form of water. so the beaker will be empty at
last because all water molecules are evaporated away.


收錄日期: 2021-04-29 20:24:49
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080416000051KK01752

檢視 Wayback Machine 備份