Mendeleev Study guides, Class notes & Summaries
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IPC practice test questions and answers graded A+ 2023/2024
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IPC practice test questionsPeriods - correct answer Each horizontal row of the periodic table. 
 
Groups / families - correct answer Each vertical column. Have similar chemical properties and similar electron configurations. 
 
Demitri Mendeleev - correct answer Made the first periodic table. He was writing a textbook and wanted to organize the 63 elements known at that time. He based his organization similar to the card game of solitaire. 
 
Increasing mass - correct answer Mendeleev organized ...
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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 GCSE Chemistry Paper 1
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AQA GCSE Chemistry Paper 1 
What is an *atom*? Ans- smallest part of an element 
What is an *element*? Ans- a substance that contains only one type of atom 
What are *chemical symbols*? Ans- - the letter or pair of letters that represents an element. 
- first letter is always capitalized 
What are *compounds*? Ans- substances in which atoms of two or more elements, which are 
chemically combined 
What is a *chemical formula*? Ans- a combination of symbols that shows the ratio of elements in a ...
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SOLVED-|Elaborated|Edexcel A level Chemistry Paper 2 Marking Scheme-June 2022
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SOLVED-|Elaborated|Edexcel A level Chemistry Paper 2 Marking Scheme-June 2022 
Edexcel A level Chemistry Paper 2 Marking Scheme-June 2022Proton c/m? - Ans>+1, 1 Neutron c/m? - Ans>0, 1 Electron c/m? - Ans>-1, 1/1500 Mass number? - Ans>Num of protons + neutrons Atomic number? - Ans>Num protons Isotope? - Ans>Different atom of the same element, same num protons. Diff number neutrons. Mendeleev vs Now? - Ans>Mendeleev: Gaps for elements, No noble gases, fewer elements. Both had...
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AFOQT Physical Science Practice Test Questions with complete solution 2023/2024
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AFOQT Physical Science Practice Test Questions with complete solution 2023/2024How do isotopes of the same element differ? - correct answer They have different number of neutrons 
 
Which scientist was responsible for developing the format of the modern periodic table? - correct answer Mendeleev 
 
Current, or the amount of electricity that is flowing, is measured in - correct answer Amperes or Amps 
 
What property of motion explains why passengers in a turning car feel pulled toward t...
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NOVA:Hunting the Elements exam with 100% correct answers already graded A+
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There are ________ unique substances (elements) arranged on an amazing chart that reveals their hidden secrets to anyone who knows how to read it. 
118 
 
 
 
All the gold ever mined would fit into a single cube about _______ feet on a side. 
60 
 
 
 
Three-quarters of the elements are ________________. 
metals 
 
 
 
How an atom reacts chemically depends on how willing it is to share _________________ with others. 
electrons 
 
 
 
How much would a 60 pound block of gold be worth in dollars? $...
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AFOQT Physical Science Practice Test exam 2023 with 100% correct answers
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How do isotopes of the same element differ? - correct answer -They have different number of neutrons 
 
Which scientist was responsible for developing the format of the modern periodic table? - correct answer -Mendeleev 
 
Current, or the amount of electricity that is flowing, is measured in - correct answer -Amperes or Amps 
 
What property of motion explains why passengers in a turning car feel pulled toward the outside of the turn? - correct answer -inertia 
 
According to the Ideal Gas Law, ...
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GCSE CHEMISTRY 8462/1 H -Higher Tier Paper JUNE 2019 Exam Questions
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0 1 This question is about the periodic table. 
In the 19th century, some scientists tried to classify the elements by arranging them in 
order of their atomic weights. 
Figure 1 shows the periodic table Mendeleev produced in 1869. 
His periodic table was more widely accepted than previous versions 
. 1 The atomic weight of tellurium (Te) is 128 and that of iodine (I) is 127 
Why did Mendeleev reverse the order of these two elements? 
. 2 Mendeleev left spaces marked with an asterisk * 
He left...
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EDEXCEL CHEMISTRY PAPER 2, question and answer, verified
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EDEXCEL CHEMISTRY PAPER 2, question and answer, verified 
Proton c/m? 
+1, 1 
 
 
 
Neutron c/m? 
0, 1 
 
 
 
Electron c/m? 
-1, 1/1500 
 
 
 
Mass number? 
Num of protons + neutrons 
 
 
 
Atomic number? 
Num protons 
 
 
 
Isotope? 
Different atom of the same element, same num protons. 
Diff number neutrons. 
 
 
 
Mendeleev vs Now? 
Mendeleev: Gaps for elements, No noble gases, fewer elements. 
Both had metals and non-metals. 
Both had groups/periods 
 
 
 
Periods? 
Rows, Increasing atomic m...
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NOVA: Hunting the Elements exam with 100% correct answers already graded A+
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How large of a cube could all the gold ever mined fit into? 
60 ft on a side. 
 
 
 
How many oz of Gold in 1 ton of rock? 
1 oz. 
 
 
 
How much is 400 tons of Gold? 
25 pounds. 
 
 
 
What is Flux? 
White powder that prevents Gold from reacting (or sticking to) other things. 
 
 
 
Bronze is a combination of... 
Copper and Tin. 
 
 
 
What type of Microscope is used to view Bronze atoms? 
Electron Microscope. 
 
 
 
How is the Periodic table organized? 
By atomic #, metals, non-metals, metallo...
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