Plum pudding model Study guides, Class notes & Summaries

AQA GCSE CHEMISTRY 8462/1H Paper 1 Higher Tier Version: 1.0 Final *JUN2384621H01* IB/M/Jun23/E15 8462/1H For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 9 10 TOTAL Monday 22 May 2023 Morning Time allowed: 1 hour 45 minutes Materials For this paper you must have: • a ruler • a scientific calculator • the periodic table (enclosed). Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at...

Aleks Placement Test: Chemistry With 100% Correct Answers Matter - answerAnything that has mass and takes up space; made of atoms Atoms - answerBasic unit of matter which cannot be broken down and contain mostly empty space; contains three parts: the electron, proton, and neutron Elements - answerA pure substance that contains only one type of atom Compound - answerTwo or more elements that are chemically bonded; includes ionic and covalent Mixture - answerTwo or more substances that are...

Rutherford's Gold Foil Experiment correct answers proposed that atoms consist of a tiny, massive, positive nucleus surrounded by electrons nucleus correct answers contains all the positive charge and nearly all the mass of the atom James Chadwick correct answers discovered the neutron cathode rays correct answers move from negative electrode to positive electrode (like electrons in a voltaic cell) Thompson's Cathode Ray Experiment correct answers discovery of the electron (also the...

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...

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...

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...

Rutherford's Gold Foil Experiment - proposed that atoms consist of a tiny, massive, positive nucleus surrounded by electrons nucleus - contains all the positive charge and nearly all the mass of the atom James Chadwick - discovered the neutron cathode rays - move from negative electrode to positive electrode (like electrons in a voltaic cell) Thompson's Cathode Ray Experiment - discovery of the electron (also the discovery that atoms are divisible into smaller particles) Milliki...

Straighterline CHEM101 Final Exam Questions and Answers Rated A+ total number of neutrons and protons in an atom; # protons + # electrons Mass Number Most nonmetallic elements are found in which block of the periodic table? p Ernest Rutherford disproved J.J. Thomson's plum-pudding model of the atom by showing that... Positive matter is concentrated in the central core Plants use up copious amounts of which alkali metal, preventing most of it from being washed out to sea? Potassiu...

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

Latest ACS Exam Review 100% Pass |Graded A+| Rutherford's Gold Foil Experiment *Answer* proposed that atoms consist of a tiny, massive, positive nucleus surrounded by electrons nucleus *Answer* contains all the positive charge and nearly all the mass of the atom James Chadwick *Answer* discovered the neutron cathode rays *Answer* move from negative electrode to positive electrode (like electrons in a voltaic cell) Thompson's Cathode Ray Experiment *Answer* discovery of the electron ...