属于物理变化的是（ ）
A．纸张燃烧
B．食物腐烂
C．浓盐酸挥发
D．碳酸受热分解
A、纸张燃烧生成二氧化碳和水，有新的物质生成，属于化学变化；
B、食物腐烂已经变质，不能再吃，说明有新的物质生成，属于化学变化；
C、浓盐酸挥发只是由液态变为气态，状态发生了变化，没有新的物质生成，属于物理变化；
D、碳酸受热分解生成氨气、水、二氧化碳，有新的物质生成，属于化学变化．
故选C．
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| Dear Linda, Thanks _1_ your letter. I'm glad 2 you can come _ 3 Sunday. When you drive over to my house, it's easy 4_ _the station. It's a little difficult after that. So here 5 some instructions (说明) :Drive past the station. You can't 6_ left into Garden Road, so go _ 7 the traffic lights into NewStreet. _8 _ a football ground 9 _ your left. Go straight ahead, pass the bank, and turn left into Green Road. Turn 10 _again into the High Street, River Street is on the right. My house is on the right, across from the school. See you on Sunday ! Love , Ann
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