The chemistry teacher asked the pupil ___. A.what water composes ofB.what does water compose ofC.what is water composed ofD.what water is composed of 相关知识点: 试题来源: 解析 D 首先我们要考虑从句不能用疑问句的形式,要用陈述语序,B和C错误,短语“由……组成”是be composed of,A也不...
Through the experiment, I make it clear what water is composed(compose) of.2. It was once common to regard this country as a society with class distinction (distinct).3. Through inovation (innovate) of many years,the company has improved its product quality.4. We want it to be easy ...
What is water composed of? What gas is released in the process of smelting? What kind of chemical compound do salt and water form? What type of bond forms between water molecules? What is the autoionization of water? What is the term for a direct change of state from a solid to a ga...
Water:A natural substance composed of hydrogen and oxygen is referred to as water. Water is an essential element for all living organisms. It exists, in liquid, gaseous and solid states. Water is odorless and tasteless and can dissolve in almost any substance....
liquid and gas. The illustration implies that the molecules are composed of a diatomicelementin which each molecule consists of two atoms of the same element, such as hydrogen (H2), nitrogen (N2), oxygen (O2) or chlorine (Cl2). However, transitioning between states is common to most matter...
They are about the same size, are composed of roughly the same mix of materials, and may have been comparably endowed at their beginning with carbon dioxide and water. However, the twins evolved differently, largely because of differences in their distance from the Sun. With a significant ...
Water is a chemical substance that is composed of hydrogen and oxygen and is vital for all known forms of life.[27] In typical usage, water refers only to its liquid form or state, but the substance also has a solid state, ice, and a gaseous state, water vapor or steam. Water covers...
What is the structure of a haiku? At its core, a haiku is defined by its brief, structured form. In English, a traditional haiku is composed of three unrhymed lines with a specific syllable count: Line 1:5 syllables Line 2:7 syllables ...
What is cinnabar and what is it used for? Cinnabar is a bright red to reddish-brown mineral composed of mercury sulfide and is the primary ore of mercury. Historically, it has been used as a source of mercury for various purposes, including in traditional medicines, alchemy and as a pigmen...
But what is soil? And how's it formed? Well, we're going to go into this in some depth, but for now let's just lay down the basics. Soil is composed of two kinds of material: inorganic material, basically small pieces of rock, and organic material, which is animal and plant matte...