Rutherford model Study guides, Class notes & Summaries
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CLEP Chemistry Latest Update Graded A
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CLEP Chemistry Latest Update Graded A John Dalton 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 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 Calculated the charge-to-mass ratio of electrons using oil drops falling in ...
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EDEXCEL GCSE Combined Science Physics – Paper 1 Foundation Tier Predicted Paper 2023 attached with correct marking scheme
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GCSE Combined Science Edexcel 
Physics – Paper 1 Foundation Tier Predicted Paper 2023 attached with correct marking scheme 
	 
Name …………………………………………………………………… 
Date ………………… 
 
 
1 hour 15 minutes allowed. 
You may use a calculator and an Edexcel equation sheet. 
 
 
 
 
Grade boundaries 
These are VERY rough guesses! Getting a 4 on this paper does not guarantee you the same mark in the exam. 
 
 
 
•	5-5	60% 
•	4-4	50% 
•	...
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AQA GCSE Separate Science Chemistry – Paper 1 Higher Tier Predicted Paper 2023 With marking scheme
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AQA GCSE Separate Science 
Chemistry – Paper 1 Higher Tier 
Predicted Paper 2023 With marking scheme 
	 
Name …………………………………………………………………… 
Date ………………… 
 
 
1 hour 45 minutes allowed. 
You may use a calculator and an AQA periodic table. 
 
 
 
 
Grade boundaries 
These are VERY rough guesses! Getting a 7 on this paper does not guarantee you the same mark in the exam. 
 
 
 
•	9	70% 
•	8	60% 
•	7	50% 
•	6	45% 
•	5	35% 
...
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Straighterline CHEM101 Final Exam Questions with 100% Correct Answers | Latest Version 2024 | Expert Verified | Ace the Test
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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? Potassium 
What is the ratio of reactants and products in the chemical equation? 
_...
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STRAIGHTERLINE CHEM101 FINAL EXAM 2024 WITH 100% CORRECT ANSWERS
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STRAIGHTERLINE CHEM101 FINAL EXAM 2024 WITH 100% CORRECT ANSWERS 
 
 
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...
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TEST BANK FOR RADIOLOGIC SCIENCE FOR TECHNOLOGISTS 11TH EDITION BY BUSHONG
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MULTIPLE CHOICE 
 
 1. The term “atom” was first used by the ___________. 
a. Ethiopians 
b. British 
c. Greeks 
d. Romans 
 
 
ANS: C 
The term “atom” was first used by the Greeks 
 
DIF: Moderate REF: p. 27 
OBJ: Relate the history of the term “atom.” 
 
 2. The first person to describe an element as being composed of identical atoms was 
__________. 
a. J. J. Thomson 
b. John Dalton 
c. Dmitri Mendeleev 
d. Niels Bohr 
 
 
ANS: B 
The first person to describe an ele...
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GCSE EDEXCEL TRIPLE SCIENCE CHEMISTRY PAPER 2 2024/2025 QUESTION PAPER ALREADY PASSED
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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) -...
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Test Bank for Chemistry Atoms First 2nd Edition by Burdge latest complete A+ graded
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Test Bank for Chemistry Atoms First 2nd Edition by Burdge latest complete A+ graded 
 
 
 
Chapter 2 Atoms and the Periodic Table (test bank) 
 
Student: 	 
 
1. 
 
The scientist who determined the magnitude of the electric charge on the electron was 
 
A.	John Dalton 
B.	Robert Millikan 
C.	J. J. Thomson 
D.	Henry Moseley 
E.	J. Burdge 
 
 
2. 
 
When J. J. Thomson discovered the electron, what physical property of the electron did he measure? 
 
 
A.	its charge, e 
B.	its chargetomass ...
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Straighterline CHEM101 Final exam 2023 with 100% correct answers
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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...
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AQA AS Physical Chemistry 2024 exam questions with 100% correct answers
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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...