Elements and compounds (pure substances) cannot be broken down by physical changes.
Sorry - just elements.
Elements can not be made into simpler substances even by chemical reactions. Compounds can be broken down to simpler substances and eventually to elements. One useful observation is that an element will burn to give only one product, whereas a compound will give more than one.
In the appropriate situation, all compounds are broken down into simpler substances.
Element Compounds can be broken down to elements (atoms) which cannot be decomposed further into simpler substances (that's why they're called a-toms, from Greek 'à-tomos', meaning 'un-sliceable'.
he used the amount of atoms in each element and compound.
Atoms of elements combine to form compounds. A chemical compound is a pure chemical substance consisting of two or more different chemical elements that can be separated into simpler substances.
Elements
Compounds are made up of 2 or more elements.Compounds can be broken down into simpler substances by chemical means, but elements cannot.Compounds are made up of 2 or more elements. Compounds can be broken down into simpler substances by chemical means, but elements cannot.
Compounds are made of two or more substances joined together, and elements are a pure substance that can't be broken down into simpler substances.
Elements are made up of only one thing. While a compound is made of two of more elements. Here is an example. H2O. Water is hydrogen and oxygen.
While some compounds do degenerate to their elements when heated, almost none do.
Compounds are made up of 2 or more elements. Compounds can be broken down into simpler substances by chemical means, but elements cannot.
Elements can not be made into simpler substances even by chemical reactions. Compounds can be broken down to simpler substances and eventually to elements. One useful observation is that an element will burn to give only one product, whereas a compound will give more than one.
In the appropriate situation, all compounds are broken down into simpler substances.
Element Compounds can be broken down to elements (atoms) which cannot be decomposed further into simpler substances (that's why they're called a-toms, from Greek 'à-tomos', meaning 'un-sliceable'.
he used the amount of atoms in each element and compound.
Elements and compounds are called substance....subtances can be either elements or compound....an elementis a substance that cannot be separated into simpler substances by ordinary means...!!a compound is a pure substance that contains two or more elements combined in afixed proportion.......example of the formation of a comp. :1. Sodium plus chlorine --> sodium chloride
Chemical compounds.