People
Atoms
People 2
Isotopes
Force in Atoms
100
DaVinci
Who was the first to suggest that air might consist of 2 different elements?
100
protons
What are positively charged particles?
100
Rutheford
Who discovered protons?
100
the same number of protons
What is the thing isotopes always have?
100
weak force
What is an important force in radioactive atoms?
200
Dolton
Who discovered that atoms had weight?
200
neutrons
What are negatively charged particles?
200
Curie
Who discovered radioactive elements?
200
strong force
What is the force that helps protons stay together in the nucleus?
300
Buntson
Who built the first spectrascope?
300
ions
What are particles with an unequal number of protoons and electrons?
300
Galusac
Who discovered molecules?
300
11
What is the mass of an isotope that has 5 protons, 6 neutrons, and 5 electrons?
300
gravitational force
What is the force that holds the electrons around the nucleus?
400
Hayatt
Who created the first plastic?
400
atomic number
What is the atomic number?
400
Lewis
Who is the person that explained electrons and how they connected to one another?
400
6
What is the number of neutrons carbon-12 has?
400
electromagnetic force
What is the force that pulls objects toward one another?
500
Mendeleev
Who constructed the periodic table of elements?
500
0.00000003
What is the average size of atoms?
500
Davy
Who started electro chemistry?
500
atomic mass
What is the weighted average of the masses of all the naturally ocurring isotopes?
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