Water Chemistry Crossword

The term ______ is applied to any substance that cannot be decomposed into simpler substances by chemical reactions.
Chemists have identified ______ chemical elements in nature.
O is the symbol for _____.
Each element is comprised of _____ particles called atoms.
An _____ is the smallest part of any element that retains all the properties of that element.
_____ have a negative charge.
_____ have a positive charge.
_____ have no charge. They are neutral.
Each atom is made up of 3 types of ________ particles.
The atomic _____ is determined by the number of protons.
The atom's _____ has an overall positive charge equal in magnitude to the number of protons it contains.
Atomic _____ is determined by the sum of protons and neutrons.
The two _____ share their electrons.
A _____ is a combination of atoms formed by a covalent bond.
The bond between two atoms of hydrogen is called a _____ bond.
Eight electrons fill the outer most shell or _____.
The valence's eight electrons can also be called an _____.
Water is a _____ molecule.