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History
General Periodic Table
Groups
General Questions
Atoms
100
The person who created the first periodic table.
Who is Mendeleev?
100
A vertical column (up and down) on the periodic table.
What is a group?
100
These are unreactive nonmetals, they do not react with other elements.
What is noble gases?
100
Most elements on the periodic table are in this category.
What are metals?
100
A particle in an atom with a positive charge
What is a proton?
200
Mendeleev arranged the elements by
What is increasing atomic mass?
200
A horizontal row (left to right) on the periodic table.
What is a period?
200
These metals are the metals that you are familiar with, they are groups 3-12, they are not as reactive as group 1 and 2 metals.
What are transition metals?
200
This element is required for substances to burn.
What is oxygen?
200
An electron has this charge.
What is a particle in an atom with a negative charge?
300
The modern periodic table is in order by
What is atomic number?
300
These are on the left side of the periodic table.
What are metals?
300
These are the most reactive nonmetals.
What are the halogens?
300
Happening at regular intervals.
What is periodic?
300
A neutral particle in the nucleus of an atom.
What is a neutron?
400
The repetition of the chemical and physical properties of elements when arranged by increasing atomic number.
What is the periodic law?
400
This is always a whole number when looking at a periodic table square.
What is the atomic number?
400
This happens to the reactivity as you go down a group.
What is the reactivity increases?
400
This element is part of all living things and in compounds including proteins, carbohydrates, and fats.
What is carbon?
400
Equals the number of protons
What is the atomic number?
500
This scientist found the proton and put the elements in order by atomic number.
Who is Henry Moseley?
500
The nonmetals are located here on the periodic table.
What is the right side (right of the stair step line)?
500
These are very reactive metals, they do not exist as elements in nature, only in compounds.
What are alkali metals?
500
This element is about 20% of the air.
What is oxygen?
500
Equals protons plus neutrons.
What is atomic mass?