应用所学化学知识回答下列问题：
（1）给煤炉生火时，用于引火的木柴应架空而不宜紧密堆在一起，其目的是______．
（2）在汽车的水箱中加入少量乙二醇，防止水箱中的水结冰而损坏水箱，依据的原理是______．
（1）木柴应架空而不宜紧密堆在一起，可使木柴与空气中氧气接触面积增大，而使燃烧更旺；
（2）乙二醇溶解于水所形成的溶液的凝固点降低，而使水在低温下不易结冰．
故答案为：
（1）增加木材与空气的接触面积；
（2）水中溶解了乙二醇使水的凝固点降低．
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| Hello. I'm Jack. I'm a boy. I'm 1 Class One, Grade One. Look! This is a picture 2 my classroom. This is my desk. It's 3 to the window. Can you see my backpack? It's 4 my chair. My books 5 on my desk. My pen and pencil 6 in my pencil case. What's that 7 my desk? It's my soccer ball. Do you like my classroom? It's big and bright. There is a map of China 8 the wall. 9 the map, it's a red flag. On the window, 10 many flowers. There is a TV and a computer in our classroom. I like our classroom very much. | ||||
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