No, I don't think we have my name is li Xiao, my name is Fred Smith. Jimmy practice medicine hi, miss Watson a pleasure to meet you. Jack she is from England. Yes, I think we have met before. It's good to see you again. That's right. Mister li. Mister Fred Miller. Our ma...
What is the arrangement of atoms within a molecule called? Molecules: Atoms are the individual components that make up every substance. Molecules are composed of two or more atoms and molecules are the basis for every chemical compound. The way that atoms are arranged within a molecule differs ...
Organic compounds contain atoms of the element carbon, usually combined with itself and with atoms of one or more other elements such as hydrogen, oxygen, nitrogen, sulfur, phosphorus, and chlorine. Many materials important to us--food, vitamins, blood, skin, cotton, wool, paper, oil, ...
(2) 分译时,that可译成重复所代替的名词或译成“它” Matter is composed of molecules that are composed of atoms. 物质是由分子组成,而分子是由原子组成。 An element is a simple substance th 25、at cannot be broken up into anything simpler. 元素是一种单质,它不可能再分成任何更单纯的物质,下一...
Fill in the blank: "A **__**_ _is composed of two or more atoms held together by chemical bonds." There is more than one answer, but the one that probably crossed your mind first is "molecule." Every grouping of two or more atoms is amolecule. Some are very simple, such as the...
What is an atom that has a different number of neutrons than other atoms of the same element? How many subatomic particles are in an atom? The amount of which subatomic particle is different between an atom and its ion? Which two particles in an atom are equal in numbe...
The majority of an atoms’ mass comes from the protons and neutrons that make up its nucleus. Electrons are the least massive of an atom’s constituent particles, with a mass of 9.11 x 10-31kg and a size too small to be measured by current techniques. Protons have a mass that is 1,...
We collectively call everything that is in this space the "interstellar medium", or ISM for short. The composition of the ISM is broken down by the scientists at the Infrared Processing and Analysis Center (IPAC) at Caltech: the ISM is mostly composed of atoms of hydrogen (~90%) and ...
Atoms are the basic building blocks that comprise all matter in the universe. Each of the elements on the periodic table is composed of uniquely structured atoms. The elements are given different physical properties depending on their atomic building blocks. The atoms themselves are comprised of a...
How do we know that matter is composed of atoms? Who is the Greek philosopher that said all matter is made of tiny particles called 'atomos' or atoms? Define Heisenberg's uncertainty rule in chemistry. What are the physical properties of a compound related to?