you wouldn’t consider it a molecule, as it is in fact a huge lattice network of individual sodium chloride compound particles, without a clear number of atomic nuclei. The same thing is true if you look at a drop of water; you aren’t looking at a molecule of water, but rather a h...
It has no known components or substructure, and therefore is believed to be an elementary particle.这种题最好有图解说比较好2.What is an element, mixture, molecule, and compound?什么是元素,混合物,分子和化合物A chemical element is a pure chemical substance consisting of one type of atom.In ...
That’s probably the best way to see it. Calling a ‘molecule’ an indivisible unit of a compound reflects chemistry’s historical focus on pure substances – on purifying and characterising bulk compounds. But chemistry really comes into its own in mixtures – including the incredible, organised...
解析 A compound is a substance form two or more elements chemically united in fixed proportions. A molecule is a group of atom that can take part in a chemical reaction.结果一 题目 what's the difference between a compound and a molecule?rt 答案 A compound is a substance form two or ...
Draw 3 cards, and record them or just place them face up in front of you. Write down three compounds or molecules that you can think of that can be made from the cards chosen, and explain why it is a compound or a molecule. Repeat as many times as desired. Examples and Practice...
Defined Ratios of Atoms The atoms in a compound have a fixed ratio. This means that every molecule in a compound will always be exactly the same. A water molecule will always have one atom of hydrogen and two atoms of oxygen. Chemical Separation ...
In the field of biotechnology, what is DNA? A. A type of protein B. A molecule that contains genetic information C. A kind of virus D. A chemical compound 相关知识点: 试题来源: 解析 B。DNA 是一种包含遗传信息的分子。选项 A 蛋白质错误;选项 C 病毒错误;选项 D 化合物不准确。
What is the name for the compound below? What is the name of the compound? What is the common name for this molecule? What are the rules for naming molecular compounds? What is the name of the molecular compound BF3? Name the following compounds below. What's the name of the following...
the compound we call water is created by combining the elements hydrogen and oxygen. One molecule of water is always made up of two hydrogen atoms and one oxygen atom. This is why water is referred to as H₂O in science. Water is created when elements chemically combine. That is, hydro...
Today, a mole isAvogadro's numberof particles, which is exactly 6.02214076×1023. For all practical purposes, the mass of one mole of a compound in grams is approximately equal to the mass of one molecule of the compound in daltons. ...