Rutherford bohr - Study guides, Class notes & Summaries
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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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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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AQA AS Physical Chemistry 2024 Exam Questions And Answers
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AQA AS Physical Chemistry 2024 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 pl...
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AQA GCSE Chemistry - Paper 1 Questions And Answers Rated A+.
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AQA GCSE Chemistry - Paper 1 Questions And Answers Rated A+. 
 
 
 
 
What is the charge of a proton? - correct answer. +1 
 
What is the charge of a neutron? - correct answer. 0 
 
What is the charge of an electron? - correct answer. -1 
 
What is the relative mass of a proton? - correct answer. 1 
 
What is the relative mass of a neutron? - correct answer. 1 
 
What is the relative mass of an electron? - correct answer. Very small 
 
How many types of atoms do elements contai...
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AQA GCSE Chemistry - Paper 1 Questions And Answers 2024.
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AQA GCSE Chemistry - Paper 1 Questions And Answers 2024. 
What is the charge of a proton? - CORRECT ANSWER +1 
 
What is the charge of a neutron? - CORRECT ANSWER 0 
 
What is the charge of an electron? - CORRECT ANSWER -1 
 
What is the relative mass of a proton? - CORRECT ANSWER 1 
 
What is the relative mass of a neutron? - CORRECT ANSWER 1 
 
What is the relative mass of an electron? - CORRECT ANSWER Very small 
 
How many types of atoms do elements contain? - CORRECT ANSWER Only one type 
 ...
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chem 141 exam 2 MSU Questions with 100% Correct Answers | Verified
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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...
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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...
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CLEP Chemistry Exam Questions & Answers 2024.
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CLEP Chemistry Exam Questions & Answers 2024. 
John 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 t...
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Quantum Mechanics Grade 12 Review Guaranteed Answers
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Quantum Mechanics Grade 12 Review Guaranteed Answers 
Who introduced the idea that particles could behave like waves? ️Louis de Broglie 
What theory did Erwin Shrodinger produce? ️the electron can only have certain quantized energies 
because of the requirement for only whole number of wavelengths for the electron wave (nodes) 
Who and what discovered the Heisenberg Uncertainty Principle? ️Werner Heisenberg discovered the 
principle that states it is impossible to simultaneously know ...
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2024 AQA GCSE Chemistry - Paper 1. Exam Questions with Complete Solutions Merged (Verified)
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Atom definition 
The smallest component of an element 
Compound 
Two or more elements, chemically joined in fixed proportions. They can only be separated by chemical 
means. 
Mixture 
Two or more elements/compounds which are not chemically combined. 
Ways to separate mixtures 
- Filtration 
- Evaporation 
- Crystallisation 
- Simple distillation 
- Fractional distillation 
- Paper chromatography 
The plum and pudding model 
Before electrons were discovered, people thought that atoms were indivi...
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