Show:
Top 20 Elements
Theories "Matter"
People
Theories "Matter" 2
Periodic Table
100
An element with only 1 electron
What is hydrogen
100
The "Age" when chemists learned to control fire.
What is the "STONE AGE"
100
He wrote the Alchemia, or the first chemistry text.
Who is Andreas Libau
100
Aristotle thought that everything was made up these 4 things.
What are earth, air, water, fire
100
He suggested using letters as element symbols
Who is Berzelius
200
Its symbol is O
What is oxygen
200
These two metals combine to create Bronze
What are copper and tin
200
Called the "Father of Modern Chemistry" because of his experimental and theoretical work. This chemist developed a system for naming chemicals.
Who is Antoine Laurent Lavoisier
200
The name of Nagaoka's atomic theory.
What is the "solar system" model
200
The elements have a repeating pattern of properties named by John Newlands. What is this pattern called?
What is the "law of octaves" The pattern was simialr to the octave scale on a piano or other musical instrument
300
Its atomic number is 7
What is Nitrogen
300
The Hittites discovered this useful material
What is Iron, leading to the Iron Age
300
Developed the "raisin bun" model of the atom.
Who is JJ Thomson
300
Developed the idea of electron shells
Who is Bohr
300
He developed the periodic table using only 63 known elements.
Who is Medeleev
400
It has an atomic mass of 39.1
What is Potassium
400
This philosopher stated that each material was made up of a different type of atomos.
Who is Democritus
400
He developed the first modern theory of atomic structure stating each element was composed of a particle called an atom.
Who is Dalton.
400
This is the lightest subatomic particle, having a mass 1/1837th as heavy as the other two.
What is the electron
400
Horizontal rows are called ___________________ and vertical columns are called ____________
What are periods and group/family
500
It has 18 protons.
What is Argon
500
Through experiments and observations, this scientist became convinced that matter was made up of tiny particles.
Who is Robert Boyle
500
Suggested that atoms were mainly empty space with a positively charged core.
Who is Rutherford
500
What Chadwick discovered.
The nucleus containes positive protons, and neutral neutrons
500
These elements have metallic and non metallic properties
What are metalloids