Chemistry Vocabulary Crossword

Group 2 in the Periodic Table of Elements. They are soft, low-density metals
The smallest particle of an element that retains the properties of that element
The number of protons in an atom
Average mass of an element
A diagram that a man named __ ___ made
The temperature where the boil
A number that is constant and never changes
A pure substance made with two elements
A compound when two or more non-metal atoms combine
A sub-atomic particle that has a negative charge
Substances that can't be separated into simpler substances
Clourine is a part of this category
An electricity charged atom formed by loosing or gaining electrons
Compounds made of ions IONIC
A theory that state many rules of molecules
A certain amount of matter
The temperature where a substance melts
A substance that has positively charged ions
A substance that has both metal and non-metal properties
The smallest part of an element
Having multiple valent spots
Two or more substances combined
Only one valent spot
A no charge sub-atomic particle
Neon is in this category NOBLE
A substance that doesn't have metal properties
A combination of ions that act like one atom
Positive charge particle
Any character that is below a symbol
The amount of space that something takes