Mendeleev Study guides, Class notes & Summaries
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AFOQT Physical Science Practice Test Questions and answers 2023
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How do isotopes of the same element differ? 
They have different number of neutrons 
 
 
 
Which scientist was responsible for developing the format of the modern periodic table? 
Mendeleev 
 
 
 
Current, or the amount of electricity that is flowing, is measured in 
Amperes or Amps 
 
 
 
What property of motion explains why passengers in a turning car feel pulled toward the outside of the turn? 
inertia 
 
 
 
According to the Ideal Gas Law, if a certain amount of gas is being held at a consta...
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AQA GCSE Chemistry - Paper 1 Correctly Answered 2023.
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AQA GCSE Chemistry - Paper 1 Correctly Answered 2023. 
What is the charge of a proton? - ANSWER +1 
 
What is the charge of a neutron? - ANSWER 0 
 
What is the charge of an electron? - ANSWER -1 
 
What is the relative mass of a proton? - ANSWER 1 
 
What is the relative mass of a neutron? - ANSWER 1 
 
What is the relative mass of an electron? - ANSWER Very small 
 
How many types of atoms do elements contain? - ANSWER Only one type 
 
What are compounds? - ANSWER Substances containing two or ...
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UPDATED GCSE EDEXCEL TRIPLE SCIENCE CHEMISTRY PAPER 2 2024/2025 QUESTION PAPER ALREADY PASSED
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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) - formula - answer CO3 (2-) 
Sulfate (ion) - formula - answer SO4 (2-) 
What do you leav...
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PHYSICAL SCIENCE EXAM QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED BY EXPERT GRADED A+
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PHYSICAL SCIENCE EXAM QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED BY EXPERT GRADED A+ 
 
Which best compares and contrasts how John Newlands and Dmitri Mendeleev organized elements? 
Both Newlands and Mendeleev arranged elements according to their atomic masses, but only Mendeleev used chemical properties as well. 
An atom of carbon (C) forms covalent bonds with two atoms of oxygen (O) to form carbon dioxide. How are the valence electrons of these atoms rearranged to form the bonds? 
An atom of c...
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IPC REVIEW PRACTICE EXAM GUIDE TEST 2024.
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IPC REVIEW PRACTICE EXAM GUIDE TEST 2024. 
Periods - 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 Mend...
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IPC practice test questions well answered rated A+ 2023/2024
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IPC practice test questions 
Periods - 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 organize...
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AQA GCSE Chemistry - Paper 1 Exam With Correct Answers
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What is the charge of a proton? -Answer +1 
 
What is the charge of a neutron? -Answer 0 
 
What is the charge of an electron? -Answer -1 
 
What is the relative mass of a proton? -Answer 1 
 
What is the relative mass of a neutron? -Answer 1 
 
What is the relative mass of an electron? -Answer Very small 
 
How many types of atoms do elements contain? -Answer Only one type 
 
What are compounds? -Answer Substances containing two or more different elements that are chemically bonded toge...
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Chapter 2: The Structure of Matter Test Bank>Test Bank for Radiologic Science for Technologists 10th Edition by Bushong
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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: page 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 element as being composed of identical atoms was John 
Dalton....
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EDEXCEL CHEMISTRY PAPER 2 Practice Question Guide.
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Proton c/m? - correct answer +1, 1 
 
Neutron c/m? - correct answer 0, 1 
 
Electron c/m? - correct answer -1, 1/1500 
 
Mass number? - correct answer Num of protons + neutrons 
 
Atomic number? - correct answer Num protons 
 
Isotope? - correct answer Different atom of the same element, same num protons. 
Diff ...
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Chemistry Praxis Study Questions and Answers
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Intensive property A physical property of a substance that is not dependent on the size of mass of a sample, and cannot be determined by looking at the substance. Ex: density, mp, bp, temperature. 
 
Extensive property A physical property that depends on the amount of matter in a sample. Ex: mass, volume. 
 
Chemical property How a substance will change when it reacts with other substances and changes its chemical identity. Ex: flammability, oxidation state, toxicity. 
 
Periodic table -Arranged...
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