Bohr model - Study guides, Class notes & Summaries

CLEP ChemistryJohn Dalton - correct answer Proposed that matter is composed of atoms; these atoms have different identities called elements, which combine to form compounds; measured masses of reactants and products. J.J. Thompson - correct answer Observed deflection of particles in a cathode ray tube; proposed that atoms are composed of positive and negative charges; developed the plum pudding model of the atom Robert Millikan - correct answer Calculated the charge-to-mass ratio of electr...

RADT 1065 Chapter 2 Test Questions and Answers All Correct How many atoms are there in one molecule of sodium bicarbonate (NaHCO3)? - Answer 6 Which of the following physicists had a major part in describing the atom as we know it today? - Answer Bohr The periodic chart of elements is attributed to: - Answer Dimitri Mendeleev Rutherford made what significant contribution to science? - Answer description of the nuclear atom The difference between x-rays and gamma rays is: - An...

mole - 6.022 x 10^23 things number of particles that allows us to convert from the molecular to the macroscopic level limiting reactant/reagent - amount of one of the reactants which limits how much product can be formed. smallest amount. percent yield - actual/theoretical x 100 electromagnetic radiation - wavelength - The distance between two corresponding parts of a wave. seconds/wave. 1/frequency. measured in m amplitude - Height of a wave frequency - waves/second. 1/wavelength. meas...

Chemistry Regents Review What was the first subatomic particle discovered? - The electron Ionic bonding is between a.. - metal and non metal The transfer of electrons from one atom to another is called - ionic bonding Which atoms are diatomic - BrINClHOF A gas is most ideal at what - low pressure and high temperature Partial charges are used in which type of bonding - ionic Which three things does hydrogen bond to - FON Lose Electrons- - Oxidation Gain Electrons- - Red...

Nuclear Medicine Physics question and answers rated A+ 2023 passedBinding energy - correct answer min amount of energy required to "free" and electron from an atom. Unstable vs stable - correct answer stable-non radioactive unstable- radioactive Ionization - correct answer removal of an ELECTRON from an atom Excitation - correct answer electron absorbs enough energy to make it move to an UNOCCUPIED shell Strong nuclear force - correct answer energy used to hold particles inside th...

What is an atom? - Ans .Smallest part of an element that can exist ▪ What is an element? - Ans .A substance made up of one type of atom ▪ How are elements represented? - Ans .Using symbols, in the periodic table ▪ Approximately how many elements are there? - Ans .100 ▪ What is a compound? - Ans .A substance made up of two or more elements chemically combined in fixed proportions ▪ How are the elements in a compound separated? - Ans .By chemical reaction ▪ How are chemical rea...

Binding energy -ANSWER min amount of energy required to "free" and electron from an atom. Unstable vs stable -ANSWER stable-non radioactive unstable- radioactive Ionization -ANSWER removal of an ELECTRON from an atom Excitation -ANSWER electron absorbs enough energy to make it move to an UNOCCUPIED shell Strong nuclear force -ANSWER energy used to hold particles inside the nucleus Electromagnetic nuclear force -ANSWER energy used to have atoms interact with other molecules W...

Describe the relationship between the frequency, wavelength, and velocity (speed) of a wave. - AnswerThe more times the wave is passing through a point in space = a higher frequency, the higher frequency creates a smaller wavelength, which is why the smallest wave is a gamma wave, it has the highest frequency and the shortest distance between waves, the velocity can be measured in m/s and is composed of frequency and wavelength Calculate any one (frequency, wavelength, or velocity) given the...

On oct 14, NYC will see the sun eclipsed about ____ % _____ than Burlington - correct answer 6, more Because of the moons eccentric orbit, the maximum change in its apparent diameter is closest to ____ % - correct answer 10 The sun usually looks redder at sunset than at midday because ____ - correct answer you're looking through a longer path of atmosphere at sunset than at midday Annular solar eclipses cannot be seen - correct answer when the moon is near its perigee On average, th...

Plasma - ANSWER ionized gas that has some electrons that are described as free because they are not bound to an atom or molecule specific gravity - ANSWER measurement of the density of substances in a liquid compared to water atomic theory - ANSWER a theory that states that all matter is composed of tiny particles called atoms. John Dalton - ANSWER developed modern atomic theory negative ion - ANSWER anion, gains electrons positive ion - ANSWER cation; loses electrons ionic bon...