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Elements Structure
Compounds
Organizing the Elements
Famous Elements
Classifying Elements
100
The smallest particle of an element that still has the properties of that element.
What is an atom?
100
When two or more elements are chemically combined in order to form a new substance.
What is a compound?
100
A table in which the elements are arranged by their properties.
What is the periodic table of elements?
100
This element is found in milk and keeps your bones strong and healthy.
What is calcium?
100
An abbreviation of an elements' name.
What is the chemical symbol?
200
A substance that cannot be broken apart into other substances.
What is an element?
200
The combination of sodium (Na) and Chorine (Cl).
What is Sodium Chloride (NaCl) or table salt?
200
Usually shiny, can be bent or stretched, and break easily.
What is a metal?
200
Humans breathe this element.
What is oxygen?
200
The amount of protons in the nucleus of an atom.
What is the atomic number?
300
The central part of an atom that contains protons and neutrons.
What is the nucleus?
300
A shorthand way to describe a compound.
What is the chemical formula?
300
One of a group of elements that seldom combine with other elements.
What are noble gases?
300
This element is very light weight and causes balloons to float.
What is helium?
300
Columns in the periodic table.
What are groups?
400
The negative particle that orbits the nucleus of an atom.
What is an electron?
400
You exhale this gaseous compound.
What is C02 or carbon dioxide?
400
Elements that have properties of both metals and nonmetals.
What are semimetals?
400
The element found in bananas.
What is potassium?
400
The horizontal rows of the periodic table.
What are periods?
500
A particle in an atom that has a neutral charge.
What is a neutron?
500
The world's most abundant compound.
What is water or H2O?
500
Many are gases, but solids are dull in color and do not conduct electricity.
What are nonmetals?
500
A form of Carbon that powers our electricity.
What is coal?
500
The state of most of the elements in the periodic table.
What are solids?