Rutherford model - Study guides, Class notes & Summaries

Honors Chemistry Practice Test Unit 3-Structure Of The Atom Questions And Answers All existence is composed of tiny indivisible particles called atoms. Different objects are made of different types of atoms ANS the classical model (Dalton) The atom is positively charged with a negatively charged electrons floating around in them ANS the chocolate chip cookie dough model (Thompson) Proved: -Atoms are mostly empty space -Most mass in the atom is concentrated in a small, dense, positiv...

DAT General Chemistry Latest Update Graded A+ Atomic Number number of protons found in that atom; low number; (Z) Mass Number Protons + Neutrons; high number; (A) Atomic Mass relative mass of that atom compared to the mass of a carbon-12 atom (which is set at 12.00); measured in amu; 1 amu = 1.66x10^-24 Atomic Weight weight (g) of one mole (mol) of a given element (g/mol); the weighted average of all the masses (not the weights) of an element, weighted according to the natural abundance of t...

GCSE EDEXCEL TRIPLE SCIENCE CHEMISTRY PAPER 2 2024/2025 QUESTION PAPER ALREADY PASSED What does 'aq' mean? - answer Aqueous - it is dissolved in water Water - formula - answer H20 Ammonia - formula - answer NH3 Carbon Dioxide - formula - answer CO2 Hydrogen - formula - answer H2 Chlorine - formula - answer Cl2 Oxygen - formula - answer O2 Ammonium (ion) - formula - answer NH4 (+) Hydroxide (ion) - formula - answer OH (-) Nitrate (ion) - formula - answer NO3 (-) Carbonate (ion) -...

AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry questions and answers verified What is the equation linking mass moles and MR? Mass=moles * MR What is the definition of Ar (relative atomic mass)? The average mass of an atom of an element compared to the mass of one twelfth of carbon 12. What does Mr stand for? Relative molecular mass Define relative isotopic mass. The mass of an isotope of an element compared to the mass of one twelfth of the mass of carbon 12 ...

Joseph (JJ) Thomson - Developed "plum pudding model" Interactions in x-ray tube - Happen at atomic level Ernest Rutherford - Model resembling tiny solar system Niels Bohr - Atoms have 3 particles Protons, Neutrons, and electrons binding energy - Energy needed to split up and atom Electron binding energy depends on - How close the electron is to the nucleus and how many protons are in the atom

DAT General Chemistry Exam |170|questions with complete solution Atomic Number ANS-number of protons found in that atom; low number; (Z) Mass Number ANS-Protons + Neutrons; high number; (A) Atomic Mass ANS-relative mass of that atom compared to the mass of a carbon-12 atom (which is set at 12.00); measured in amu; 1 amu = ANS-1.66x10^-24 Atomic Weight ANS-weight (g) of one mole (mol) of a given element (g/mol); the weighted average of all the masses (not the weights) of an element, ...

AQA AS Physical Chemistry 2024 exam questions with 100% correct answers Who described atoms as solid spheres that make up different elements and when? - ANSWERS John Dalton in the 19th century Who suggested that atoms of a particular element had the same mass and atoms of different elements had different masses and when? - ANSWERS John Dalton in 1803 Who discovered the electron and when? - ANSWERS JJ Thomson, 1897 discovered electrons proving atoms weren't indivisible or solid. New m...

AQA AS Physical Chemistry Exam Questions and Answers Who described atoms as solid spheres that make up different elements and when? - Answer- John Dalton in the 19th century Who suggested that atoms of a particular element had the same mass and atoms of different elements had different masses and when? - Answer- John Dalton in 1803 Who discovered the electron and when? - Answer- JJ Thomson, 1897 discovered electrons proving atoms weren't indivisible or solid. New model named plum puddin...

Mass Number - correct answer -total number of neutrons and protons in an atom; # protons + # electrons p - correct answer -Most nonmetallic elements are found in which block of the periodic table? Positive matter is concentrated in the central core - correct answer -Ernest Rutherford disproved J.J. Thomson's plum-pudding model of the atom by showing that... Potassium - correct answer -Plants use up copious amounts of which alkali metal, preventing most of it from being washed out to se...

DAT General Chemistry Exam Questions Correctly Answered. Atomic Number - CORRECT ANSWER number of protons found in that atom; low number; (Z) Mass Number - CORRECT ANSWER Protons + Neutrons; high number; (A) Atomic Mass - CORRECT ANSWER relative mass of that atom compared to the mass of a carbon-12 atom (which is set at 12.00); measured in amu; 1 amu = - CORRECT ANSWER 1.66x10^-24 Atomic Weight - CORRECT ANSWER weight (g) of one mole (mol) of a given element (g/mol); the weighte...