Element
(It IS possible to alter elements by bombarding them with sub atomic particles and attempting to either augment or spilt the nucleus. Some elements are self-altering. These are the radioactive isotopes and they can change to several different elements before reaching their end state.)
A pure substance that cannot be chemically broken down into simpler substances.
A substance that cannot be broken down is a pure substance
Diamond. Diamond is composed strictly of carbon, covalently bonded to one another creating a covalent network, making it the hardest substance in the world. Also, graphite of your pencil is composed strictly of carbon, except that the structure is different than diamond.
A pure substance is a substance that cannot be separated by means of physical separation but only by chemical. It is a change in time.
!!A pure substance that cannot be separated or broken down into simpler substances by ordinary chemical means!!
element
element
Sodium can be separated into simpler substances only by chemical means. Water, salt, and gold are pure substances that cannot be separated into simpler substances by chemical means.
The characteristics of pure substances are:fixed melting pointfixed boiling pointsfixed valencyfixed densitystability
An element is a pure substance made of one type of atom that cannot be broken down into simpler substances by chemical means. Each element is defined by the number of protons in its nucleus, which determines its unique chemical properties.
An element is a pure substance that cannot be broken down into simpler substances by chemical means.
Is a pure substance such as an element. Remember elements can not be broken down further by chemical or physical processes.
Not: atoms The answer is an element
Ammonia (NH3) is a pure substance. It is a compound made up of nitrogen and hydrogen in a fixed ratio, and it cannot be separated into simpler substances by physical means.
An element is a pure substance that cannot be broken down into simpler substances by chemical means. Each element is composed of only one type of atom.
Carbon is an example of an element, which is a pure substance that cannot be broken down into simpler substances by chemical means.
Carbon monoxide is considered a pure substance because it is a compound composed of two elements, carbon and oxygen, in a fixed ratio (1:1). It cannot be separated into simpler substances by physical methods.