History of the Periodic table
Who created the first periodic table?
What are the three main subatomic particles?
What is protons, neutrons, and elecrtrons.
What is an isotope?
What is an atom that has less or more neutrons and the same amount protons than the element on the periodic table.
Who is the person who proposed that an electron is found only in specific circular paths around the nucleus.
Who is Niels Bohr.
What are the three main categories of elements?
What is Non-Metals, Metals, and Metalloids.
What is the 15 in Oxygen-15?
What is atomic mass.
What two subatomic particles do you used to find the atomic mass?
What is neutrons and protons.
What couldn't bohr model explain?
What is chemical and physical properties of the elements.
What is the horizontal rows and vertical columns on a periodic table called?
What is periods and groups/families.
What is an Ion?
What is an atom that has lost or gain an electron.
What is the mass of an Oxygen that has 8 protons and 7 neutrons.
What is 15amu.
What is the equation for light energy and quantum theory?
What is speed of light =wavelength * frequency and energy = planck's constant * frequency.
What are the seven diatomic elements?
What is Hydrogen, Nitrogen, Oxygen, Flourine, Chlorine, Bromine, and Iodine
What is an atom that has gains and electron called and what is an ion that has lost an electron called.
What is a cation and a anion.
What is the formula to find the average mass of an atom?
What is add all mass * relative abundance for all the isotopes (mass*abundance + mass*abundance = average atomic mass)
What is the relationship between Wavelength and Frequency.
What is frequency and wavelength are inversely proportional and energy and Frequency are directly proportional.
What do the vertical columns on the periodic table organize?
What is elements in a group have the same chemical properties and same amount of valence electrons.
What is APEMAN in Chemistry?
What is an acronym for APE meaning Atomic number = Protons = Electron and Man meaning Mass Number - Atomic Number = Neutrons.
What is the average atomic mass of chlorine if the two isotopes are Chlorine-35 with an abundance of 75.78% and an isotope mass of 34.969u and Chlorine-37 with an abundance of 24.22% and an isotope mass of 36.966u.
What is 35.45u
What is the wavelength of a wave in the energy is 9.00 x 10^-19j?
What is 2.21 * 10^-7m.