单词拼写

1.Whatever happens, we will not use v___ . We should settlethings in a peaceful way.

2.Women are fighting for e _____ pay with men because they do the same job.

3.Most children in cities are better e ____ than those in thecountryside.

4.They____( 奖励) the winners with gifts of fruits and flowers.

5. The public pay more attention to the _____ ( 质量)of milkafter the Sanlu tainted milk case.

回答下列问题：

（1）请用化学用语表示：3个钾原子______，2个氮分子______；

（2）如图是铝的结构示意图和在周期表中的位置图，则铝原子的核电荷数是______，铝元素的相对原子质量是______；

（3）物质①牛奶；②食醋；③蔗糖；④矿泉水，其中属于纯净物的是______（填序号）．