This person determined that matter is indivisible and created the name Atom.
What is Democritus
100
The atomic number of an element identifies the number of
What is Protons
100
Electrons are arranged by their
What is Energy level
100
This element has the chemical symbol Ne
What is Neon
200
Which subatomic particles has a positive charge
What is Proton
200
What are the three basic ideas of Dalton
What is All elements are composed of atoms.
Atoms of the same element are the same. Atoms of different elements are different.
Compounds are formed by joining atoms of two or more elements.
200
An AMU stands for ? What is an AMU
What is Atomic Mass Unit
200
The are where electrons can be found is called
What is Electron cloud
200
This element has the atomic number 2
What is Helium
300
Which subatomic particle has a neutral charge
What is Neutrons
300
This scientist created a model of how electrons move in definite orbits like planets around the sun.
What is Bohr
300
How are isotopes different than normal atoms of an element
What is # of neutrons
300
The first energy level can hold
What is 2 electrons
300
This element has 7 electrons in an uncharged atom.
What is Nitrogen
400
Which subatomic particle has a negative charge
What is electron
400
This person found the nucleus of an atom through a gold foil experiment.
What is Rutherford
400
What is the mass number of an element.
What is When you add up all the protons and neutrons found in the nucleus.
400
The second and third shells can hold
What is 8 electrons
400
This element is used in making soda cans.
What is Aluminum
500
This is the substance that makes up all the subatomic particles found in the nucleus
What is Quark
500
The plum and pudding model was created by
What is Thomson
500
What is the atomic mass of an element
What is What you add up all the isotopes of that element as they occur in nature.
500
The number of electrons of an uncharged atom is
What is equal to the number of protons
500
This element has 2 electrons in the first shell and seven in the second