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Elements
The basics
Miscelaneous
100
The first element on the periodic table, it makes up 90% of the universe, and it is only element that doesn't have a family
What is hydrogen?
100
What is Matter?
Anything that has mass and takes up space?
100
The basic unit that makes up all matter.
What are atoms?
200
The periodic table is divided into ______, _________, and _________.
What are metals, nonmetals, metaloids
200
Matter made of only one kind of atom and it can't be made any simpler.
What is an element?
200
______ _________ invented the periodic table. At first chemists knew of __ different elements.
What is Dmitri Mendeleev, 63
300
The elements to the far right of the periodic table
What are the noble gases?
300
What is matter with a definite composition and characteristic properties.
What is a substance?
300
Highly reactive elements are on the ____ side of the table and nonreactive elements are on the _____ side of the table.
What is left, right
400
These three elements are magnetic
What are Iron, nickel, and cobalt?
400
Matter made up of two or more substances but keep their own properties.
What is a mixture?
500
The most common form of carbon makes up __% of all carbon, has _ protons, and is called carbon __.
What are 98, 6, 12
500
number of elements on the periodic table
What are 118 elements?