The Atom Flashcards
What are the atoms made of?
The are made of three sub atomic particles
What are the three sub atomic particles?
Protons, nuetrons, electrons
What is in the nucleus of the atom?
The protons and nuetrons
Where is the electrons in the atom
They orbit the nucleus
What is the protons mass?
1unit
What is the mass of the neutrons?
1 unit
What is the mass of the electron?
Negligible
What sub atomic particle is positively charged?
Protons
What sub atomic particle is neutral?
The neutron
What sub atomic particle is negativly charged?
Electron
What is the atomic number?
The number of protons in an atom of an element
What is the atomic number?
The number of protons in an element
What are isotopes?
Atoms of the same element that have different numbers of nuetrons
What is the mass number?
The number of protons and neutrons together?
How do find put how many neutrons there are in an element?
You subtract the mass the mass number from the atomic number
Who was the first person to put forward the idea of electron shells containing electrons that orbit the nucleus
Niels bohr
What are the first ten elements of the periodic table?
Hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine and neon
What are the second ten elements of the periodic table?
Sodium, magnesium, alumnium, silicon, phosphorus, sulfur, chlorine, argon, potassium and calcium
What is H+
Hydrogen
What is He
Helium
Lithium
Li+
What is Be2+
Beryllium
What is the symbol for Alumnium
Al3+
What is Si
Silicon
