Elements
What’s the silicon symbol
Si
What is periodic law
Elements are arranged in atomic number order and show structure of each property
What particle has no charge?
Neutron
What did Bohr discover?
Electrons travel in seperate orbits around the nucleus and that number of electrons in the order of the orbit shows the properties of that certain element
What’s an atomic number
The number of protons of each of the certain element.
What’s the calcium symbol
Ca
What did mendeleev do?
Chemist who developed periodic classification of elements
What particle has a negative charge.
Electron
Who had the plum pudding theory.
J.j thompson
Where does the electron stay.
Electron cloud
What’s k a symbol for
Mendeleev and Meyer both created their own periodic table. True or false.
True
What subatomic particle is not inside the nucleus?
Electrons
Who discovered the mass of an electron.
Robert Millikan.
What’s a hydrogen.
An element with 1 proton and 1 atom.
What’s is P a symbol for
phosphorus
What did the law of octaves suggest?
Elements must be arranged in octaves because certain elements repeated every 8th element
How many electrons can an S block have up to
2
Who did the experiment with gold foil?
Rutherford.
What’s an isotope
2 seperate atoms with the same number of protons but different number of neutrons.
What’s lithiums symbol
Li
Johann dobereiner classified some elects into a group of three. What were those called.
Model of triads.
What particle has a positivE charge.
proton
What’s daltons atom theory.
All matter is composed of atoms.
What’s the list of nucleons in atoms and state their mass/charge.
P+- lamu, ē - Oamu, h-lamu