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...
What is a pure compound? Chemistry: A compound is another term for a molecule. A molecule consists of two or more atoms (elements) that are bound together by either a covalent or an ionic bond. Purity The purity of a compound can be examined using different chemical techniques. Examples ...
A covalent compound is amoleculeformed bycovalent bonds, in which theatomsshare one or more pairs ofvalence electrons. The Different Kinds of Compounds Chemical compounds are generally grouped into one of two categories: covalent compounds and ionic compounds. Ionic compounds are made up of electrica...
What is molecular geometry? What factors affect the geometry of a molecule? Learn molecular geometry shapes and types of molecular geometry. See examples. Related to this Question Give the formula of the compound: Ammonium nitrate. Write the formula for the compound ammonium nitrate. ...
Today, a mole is Avogadro's number of 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. ...
A molecular formula describes which atoms are present in a molecule. The subscript number found after the elemental symbol indicates the number of atoms present for each element in the molecule. Answer and Explanation: The molecular formula of ammonium nitrate is NH4NO3. The molecular formula indicat...
可否翻译出原体,在给出英文答案?1.What is a proton,neutron,and electron?2.What is an element,mixture,molecule,and compound?3.What will determine if an object will float if is placed in a fluid?4.What is the unit of energy used in electricity bills?How many joules is this equal to?(Can...
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.
Just like a sieve might be used to separate rocks from sand, a molecular sieve separates larger molecules from smaller ones. For example, water molecules have a molecular radius of 0.193 nm while a molecule ofacetonehas a radius of 0.308 nm. Pouring an acetone solution into a molecular sieve...
Alcohols contain a functional group made up of an oxygen bound to a hydrogen (-OH), and alkenes have a functional group of a carbon double bonded to another carbon (C=C). Alkynes are similar to alkenes, though the functional group consists of a carbon molecule with a triplebondto another...