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铁是生活中的常见金属，如图所示是与铁有关的两个实验，下列说法不正确的是（ ）
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金属在日常生活中随处可见研究金属的性质可以更好地利用金属.1铝铁铜是常见金属.下列生活用品中主要利用
取等质量的镁铁两种金属分别投入两个各装有50ml相同质量分数的盐酸的烧杯中充分反应后产生的氢气质量m
将等质量的锌铁两种金属同时分别放入两份完全相同的稀盐酸中充分反应生成H2的质量与反应时间的关系如图所
x、y分别为铁、锌
两份盐酸均完全反应
反应结束时，两种金属一定均有剩余
反应结束时，金属铁一定有剩余，锌可能有剩余
高铁酸钠Na2FeO4是一种性能优良的净水剂下列有关高铁酸钠的说法正确的是
属于氧化物
由两个金属元素和一个非金属元素组成
铁元素化合价为+6
其中钠、铁、氧元素质量比是2：1：4
化学小组为探究铁铜锌银的金属活动性顺序设计了如图所示的三个实验其中金属均已打磨其形状大小及同种稀盐酸
金属材料在生产生活中有着广泛的应用人类的生产和生活都离不开金属1新型材料纳米级铁粉具有广泛的用途它比
聪聪同学为了比较铁铜和未知金属X.的活动性大小设计了如图所示实验1实验中可以观察到金属丝X.表面无明
在探究压力作用的效果与哪些因素有关的实验中利用了两个相同的木块和一块海绵如图所示实验中通过观察___
小明为探究锌铁铜三种金属的活动性顺序设计了如图所示的两个实验①实验一中小明以金属表面产生气泡的快慢为
将等质量的锌铁两种金属同时分别放入两份完全相同的稀盐酸中充分反应生成H2的质量与反应时间的关系如图所
x、y分别为铁、锌
两份盐酸均完全反应
反应结束时，两种金属一定均有剩余
反应结束时，金属铁一定有剩余，锌可能有剩余
金属材料在生产生活中有着广泛的应用人类的生产和生活都离不开金属1新型材料纳米级铁粉具有广泛的用途它比
甲乙两个底面积不同的轻质圆柱形容器放在水平地面上分别盛有质量相等的水如图所示现有铁铝两个金属实心小球
将铁球放入甲中
将铁球放入乙中
将铝球放入甲中
将铝球放入乙中
小明为探究锌铁铜三种金属的活动性顺序设计了如图所示的两个实验①实验一中小明以金属表面产生气泡的快慢为
如图所示是有关金属性质探究实验下列有关说法正确的是
探究影响金属与酸反应的速率因素，不同的酸与金属反应，反应的速率不同
探究铜与铁的金属活动性强弱 ，铁表面产生气泡，铜无现象，得出铁的活动性比铜强
探究锌与铁的金属活动性强弱，锌粒表面产生气泡速率快，得出锌的活动性比铁强
探究铁生锈条件，得出铁生锈与氧气或空气有关
人类每年要向自然界索取大量的金属矿物资源金属的用途与它们的物理性质和化学性质都有着密切的关系请回答下
化学小组用如图所示实验探究铁生锈的条件其中A.B为敞口试管C盖有严密的橡胶塞.A和B下层都装有煮沸过
如图所示是生活中常用来固定房门的门吸它由磁铁和金属两部分组成.该金属能被磁铁吸引是因为可能含有以下材
银
铁
铝
锌
取等质量的镁和铁两种金属将镁放入稀硫酸中铁放入稀盐酸中产生氢气的质量随反应时间变化曲线如图所示下列说
消耗铁的质量一定小于镁的质量
充分反应后，镁、铁一定都有剩余
充分反应后，稀硫酸和稀盐酸一定都没有剩余
充分反应后，溶液的质量一定都有所增加
在铁碳合金的平衡组织中__常见的三个单相组织为____常见的两个两组织 为____
铁是日常生活中常见的金属它的下列性质中属于铁的化学性质的是
铁表面有银白色的金属光泽
铁有导热性
铁在潮湿的空气中易生锈
铁质软
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解方程＝．
我国东南沿海某地的风力资源丰富一年风日平均风速不小于3m/s的时间共约160天其中日平均风速不小于6m/s的时间约占60天为了充分利用风能这种绿色资源该地拟建一个小型风力发电厂决定选用AB两种型号的风力发电机．根据产品说明这两种风力发电机在各种风速下的日发电量即一天的发电量如下表 根据上面的数据回答 1若这个发电厂购买x台A型风力发电机则预计这些A型风力发电机一年的发电总量至少为/kw•h 2已知A型风力发电机每台0.3万元B型风力发电机每台0.2万元该发电厂拟购买风力发电机共10台希望购机的费用不超过2.6万元而建成的风力发电机厂每年的发电量不少于102000kw•h请你提供符合条件的购机方案．
25分假如你是李华是你校英文报纸Teens'Life的编辑.请你用英文为报纸写一篇介绍中国传统节日端午节的文章. 要点如下: 1.节日的日期; 2.节日的由来; 3.庆祝的方式. 注意: 1.词数100左右; 2.短文开头已给出不计入总词数; 3.可适当增加细节以使行文连贯. 参考词汇:战国时期theWarringStatesPeriod;自杀commitsuicide;粽子Zongzi. TheDragonBoatFestival
请写出一个满足下列条件的函数当x＞0时函数值y随着x增大而增大．
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