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q describe electrochemistryelectricity ie electric current is a flow of electric chargesin metals it is the flow of electronsin electrolytes it is
q determine molecular mass of atomsans 602 x 1023 is a really big number it would be hard to count that many of any object thats one of the
q explain pauli exclusion principlewhen assigning electron configurations it is essential to consider the two important principles concerning
q illustrate nature of light as a particleans you have seen that when excited electrons return to the ground state they release packets of energy
q quantum mechanical model of the atomans using quantum mechanics scientists realized that the exact location of an electron could not be determined
q illustrate the quantum mechanicsans in 1924 a french scientist named louis de broglie proposed another model for the nature of the electrons in
q evolution of the modern atomic modelans the atomic models of dalton thomson rutherford and bohr eventually evolved into the current-day quantum
q what is speed of light waveanslight is just one type of wave like all waves it can be characterized by frequency wavelength and amplitude similarly
q place these types of light in order from highest to lowest energy infrared light ultraviolet radio waves microwaves green lightans highest energy
q place these types of light in order from largest to smallest wavelength blue light x-rays gamma rays microwaves green lightlargest
q what is the electromagnetic spectrumanslight is a very small slice of the electromagnetic spectrum just the wavelengths that our eyes can see which
each element has a unique number of protons this unique number is known as the elements atomic number all atoms of a given element have the same
beginning in the early nineteenth century scientists developed models to explain the structure of the atom as more information was discovered about
q what is atomic mass unitsans notice in the last column of the table the masses of the subatomic particles are reported in atomic mass units the
q illustrate properties of protons and neutronsanswe now know that following fundamental properties of protons and neutrons1 the proton has a charge
q composition of the nucleussince the time of rutherford other scientists have learned a significant amount about the fundamental properties about
q determine mass of an electronans three years later after jj thomson discovered the electron the american scientist robert millikan used an oil drop
q determine mass to charge ratio of the electronanseventually thomson was able to find the ratio of the electrons mass to its electrical charge me
q what are the subatomic particlesanswhat does the inside of atom look like following daltons discovery that all matter was composed of atoms
q explain important properties of energyproperties of energythere are two important laws that explain the important properties of energyconservation
q what are the diffrent forms of energyans kinetic energy is energy of motion gas molecules of a given substance move much more rapidly than do the
q illustrate classification of matterpure substancesin order to understand what a pure substance is you must think of it on an atomic levelelements
matter is anything that has mass and takes up space the term matter refers to all the materials or stuff making up the universe everything you see
the molar concentration of an hcl solution is 124 moll how many moles of hcl is in 150 l of hcl
0205g of a metal on treatment with dilute acid gave 1066ml of hydrogen collected over water at 755mm pressure and 17 degree celsius calculate the