题干

用右图装置完成以下实验:

Ⅰ.探究燃烧条件:若B处盛放木炭。

a.先在A处通入氮气一段时间后,在B处加热,B、C处没有明显变化;

b.待B处冷却至室温,在A处通入氧气一段时间后,B、C处没有明显变化;

c.在A处继续通入氧气,然后在B处加热,发现木炭燃烧,C处变浑浊。

①对比实验a与c,说明燃烧的条件之一是____;对比实验b与c,说明燃烧的条件之一是____

写出实验c中有关反应的化学方程式________

Ⅱ.探究一氧化碳的化学性质。

若B处盛放氧化铜粉末。在A处通入一氧化碳一段时间后,在B处下方加热,B处可观察到的现象为____,反应的化学方程式为____;尾气处理的方法为____

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答案(点此获取答案解析)

\u9700\u8981\u6c27\u6c14,\u6e29\u5ea6\u8fbe\u5230\u7740\u706b\u70b9,,CO2+Ca(OH)2=CaCO3\u2193+H2O,\u56fa\u4f53\u7531\u9ed1\u8272\u53d8\u4e3a\u7ea2\u8272,,\u70b9\u71c3\u5c

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    Good learners can inspire students or anybody to learn well. Here are some characteristics of good learners.

    Good learners are curious. They wonder about all sorts of things, often about knowledge beyond their areas of expertise(专长)____ Finding out about something they didn't know satisfies them for the moment, but their curiosity is addictive.

    Good learners don't give up easily. A few things may come easily to learners but most knowledge arrives after effort____ They try to search out new information. They read, analyze, and evaluate the information they've found. Then they study more and work at what they don't understand.

    Good learners know that a lot of learning isn't fun. The journey to understanding generally isn't all that exciting____ Others need a tiresome attention to detail, and still others need periods of intense mental focus. Your backs hurt, your arms and legs get tired, and your coffee gets cold.

    ____ There's always more to know. Good learners are never satisfied with how much they know about anything. They are pulled around by questions—the ones they still can't answer, or the ones without very good answers. Those questions follow them like day follows night with the answers bringing daylight.

    Good learners share what they've learned. Good learners are teachers committed to sharing with others what they've learned____Good learners can also explain what they know in ways that make sense to others. They are connected to the knowledge passed on to them and committed to leaving what they've learned with others.

A. Good learners stay positive.

B. They write about it, and talk about it.

C. They love the discovery part of learning.

D. Good learners never run out of questions.

E. Some knowledge can broaden our views.

F. Good learners are willing to put in the time.

G. Some learning tasks require boring repetition.