Dmitri mendeleev - Study guides, Class notes & Summaries

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...

Praxis 5435 Exam Study Guide with Complete Solutions Volumetric Flask - Answer️️ -used for making liquid solutions of precise volumes, bulb shaped with narrow tube Erlenmeyer flask - Answer️️ -Used for mixing, transporting, and reacting Burette - Answer️️ -a graduated glass tube with a tap at one end, for delivering known volumes of a liquid, especially in titrations. Titration - Answer️️ -a measured amount of a solution of unknown concentration is added to a known volume...

Igneous Rock formed when hot magma cools beneath the ground or lava cools above the ground forms crystal like/ glassy rocks ex: granite, pumus, basalt Sedimentary Rock Changed by pressure does not involve heat Usually near water/ involves water sometimes contain fossils forms from previously weathered and erroted material which may have been igneous, sedimentary, rock metamorphic rock. ex: dolemite, limestone, sandstone Metamorphic Rock Has been changed by great h...

Chapter 2: The Structure of Matter Test Bank 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: 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 ...

Democritus and Leucippus Correct Answer: envisioned atomos (invisible particle) Plato Correct Answer: proposes aether (dodecahedron) fire (tetrahedron) water (icosahedron) air (octahedron) earth (cube) Kanada Correct Answer: said that atom was indestructible Aristotle Correct Answer: believes that matter is infinitely divisible Asharite school Correct Answer: where Islamic philosophers synthesize Greek and Indian ideas Gassendi Correct Answer: reconciles atomic theory wi...

Chapter 7 Chem Questions and Answers 2023 All of the following statements are true about physical changes EXCEPT: a) chemical structure does not change b) changes always involve either the gain or loss of energy c) a new substance possessing different material composition is created d) freezing water to form ice cubes is an example of a physical change a new substance possessing different material composition is created The molecular weight of each element is determined by the: a) ...

Module 3 1.Explain how scientific observations led to the development of the periodic table. Dmitri Mendeleev- first periodic table, organized 63 known elements according to properties, organized into rows and columns and wrote name, mass, chemical properties on each Henry Gwyn Jefferys- worke with Earnest Rutherford, experimented with 38 metals,he found in Mendeleev's periodic table ,led to modern definition of atomic number and the recognition the atomic number was to the periodic table...

HESI A2 ENTRANCEEXAM FOR CHAMBERLAINCOLLGE OF NURSING 2023 QUESTIONS WITH ANSWERS CHEMISTRY HESI A2 CHEMISTRY V1/V2 FILE 1. If a Hydrogen isin a compound, what would its oxidation number be? +1 2. What isthe oxidation number of any simple ion? +1 or -1 depending on the charge of the ion 3. How many kilograms are in a pound? 0. kg 4. What is the temperature for freezing point of water in Celsius? 0 degrees Celsius (32°F for Fahrenheit) 5. What is the conversion of Celsius to Fah...

RADIOLOGIC SCIENCE FOR TECHNOLOGISTS 11TH EDITION BUSHONG TEST BANKMULTIPLE 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 t...

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) -...