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Atomic Structure
Atoms
Periodic Table of Elements
Elements
Molecules
100
It is a basic unit of matter that is small.
What is an atom?
100
Group of atoms bound to each other by chemical bonds.
What is a molecule?
100
The names of the rows in the periodic table.
What are periods?
100
It is the lightest element in the periodic table.
What is hydrogen?
100
Has atoms of a single chemical element.
What is a homonuclear molecule?
200
Very dense region consisting of protons and neutrons at the center of an atom.
What is a nucleus?
200
An atom or molecule in which the total number of electrons is not equal to the total number of protons.
What is an ion?
200
The name of the columns in the periodic table.
What are groups?
200
It's a member of the chalcogen group.
What is oxygen?
200
Pure chemical substance consisting of two or more different chemical elements.
What is a chemical compound?
300
Subatomic particle with a positive electric charge.
What is a proton?
300
Pure chemical substance consisting of a single type of atom distinguished by its atomic number.
What is a chemical element?
300
Group of chemical elements with similar properties.
What are the noble gases?
300
A soft gray alkaline earth metal.
What is calcium?
300
Electromagnetic attractive interaction between polar molecules.
What is a hydrogen bond?
400
Subatomic hadron particle and have no net electric charge and a mass slightly larger than a proton.
What is a neutron?
400
Number of protons found in the nucleus of an atom.
What is atomic number?
400
They make up most of the periodic table.
What are metals?
400
Soft, silver-white, highly reactive metal and is a member of the alkali metals.
What is sodium?
400
Electrostatic attraction between oppositely charged ions.
What is an ionic bond?
500
Subatomic particle with a negative elementary electric charge.
What is an electron?
500
Have the same number of protons in each number, but don't have the same neutron number.
What is an isotope?
500
A chemical element that has properties that are in between or a mixture of metals and nonmetals.
What are metalloids?
500
A gas of diatomic molecules and is colorless and odorless.
What is nitrogen?
500
A chemical bond that involves the sharing of electron pairs between atoms.
What is a covalent bond?