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ELEMENTS AND ATOMS

Teacher: Corpening
Horizontales
Smallest particle of an element
ORBITS OR ENERGY LEVELS. THE NUMBER OF SHELLS VARIES(CHANGES) FOR EACH TYPE OF ATOM.
A pure substance made of only one kind of atom
The time it takes for half of the atoms in a radioactive element to break down
Equals the number of protons and neutrons in its nucleus.
A table that classifies elements by their physical and chemical properties
A particle that is electrically charged (positive or negative)
A subatomic particle that has a positive charge and that is found in the nucleus of an atom
A group of unreactive elements
the ability to do work or cause change; can be changed into different forms and can move between objects
A particle made of two or more atoms bonded together
A subatomic particle that has no charge and that is found in the nucleus of an atom
Element used to disinfect water supplies
Verticales
A measure of the amount of matter in an object
Anything that has mass and takes up space
a colorless, odorless gas that burns easily
Elements that are good conductors of heat and electric current.
Density of an object relative to water.
A general name for atoms and molecules (and ions)
A single kind of matter that is pure and has a specific set of properties
A substance made up of atoms of two or more different elements joined by chemical bonds
Number of protons in nucleus
Most *abundant* element in the *earth's atmosphere*
Element contained in all living things, whether plant.:
The measure of how acidic or basic a substance is