SCIENCE
DAY 1, 4 QUARTER
TH
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Define the given terms:
Chemical Elements – are the simplest form of matter. A chemical element is a pure
chemical substance consisting of one type of atom distinguished by its atomic number.
Each chemical element is assigned a specific atomic number. Elements are divided into
metals, metalloids and non-metals.
Chemical compound – When two or more distinct elements are chemically combined,
with the atoms held together by chemical bonds, the result is termed a chemical
compound.
Atomic Number – of an element is equal to the number of protons that defines the
element. Atomic number is also number of protons in its nucleus.
Isotopes – Atoms of the same element having different numbers of neutrons are known
as isotopes of the element.
By: Lucido, Danielle A.