1我想知道matter与substance在化学上意思的区别,我的书里面有这么几句"The world around us is made up of matter.Matter is anything that occupies space and has mass.Everthingwe see,touch,taste,or smell is matter.""One particular type of matter is called a substance .Iron,water and air are exam...
百度试题 结果1 题目The hardest natural substance is ___. A. diamond B. gold C. steel D. iron 相关知识点: 试题来源: 解析 A。自然界中最硬的物质是钻石,选项 A 正确。反馈 收藏
【答案】：C 句意为：牛肉是铁元素的最佳来源。A项beginnin9意为“开始”；B项storage意为 “贮存”；C项source意为“来源”；D项stance意为“物质”。C项和画线部分同义。故选C项。
"One particular type of matter is called a substance .Iron,water and air are examples of substances."因为我觉得上面说的substance已经包含了一切物质了,我想不出matter里还可能有什么.所以可否以此解释一下matter与substance在化学上意思的区别, 扫码下载作业帮搜索答疑一搜即得...
i hurried forward i hurting you i hxdye a headache i i iron i icheme institute of i ide addre i ide calliper i ide thread i if no i ignore you i in italy i inform you that i h i ing frames for othe i ing o tacle i instantly panic i intreated him with i join with you i...
then we consider resc then we discuss then we saw father then we turn around a then we would cook co then we would expensi then who knows then will i bring the then with molten iron then withheld approva then world map then worth it then you and i well j then you can ask poli the...
aA compound is a substance that can be split into two or more elements. Water is a compound because it can be split into its components, hydrogen and oxygen. 化合物是可以被分裂成两个或多个元素的物质。 因为它可以被分裂成它的组分、氢和氧气,水是化合物。[translate]...
material, matter,substance5. Steel is a mixture of iron and other6. That is a of principle.7. Tell us the of your activity.8. This suit is made of very good 相关知识点: 试题来源: 解析 5. substances 6. matter 7. substance 8. material ...
material,matter,substance5. Steel is a mixture of iron and other6. That is aOf_(principle7. Tell us theof your activity.8. This suit is made of very good 相关知识点: 试题来源: 解析 5. substances 6.matter 7.substance 8.material ...
B. No chemical reaction occurs. C. A new substance is formed. D. The mass of iron decreases. 相关知识点: 试题来源: 解析 C。铁生锈是化学变化,在这个过程中会形成新物质。A 选项颜色会改变,错误;B 选项有化学反应发生,错误;D 选项铁生锈质量会增加,错误。反馈 收藏 ...