Millikan Study guides, Class notes & Summaries

ACS Chemistry general Exam With 100% Correct Answers atomic number = - answer# of protons mass number = - answer# of protons + neutrons the number of protons in a neutral atom will equal the - answer# of electrons how to find the correct number of neutrons - answermass number - atomic number Forms of the same elements that differ in amount of neutrons - answerisotopes What particle, if lost from the nucleus, would NOT cause a change in the atomic number? - answera neutron because it has ...

Dalton's Atomic Theory correct answer: 1. Each element is composed of atoms 2. all atoms of a given element are identical all same in each individual element but no two elements are the same 3. Atoms can not be recreated by a reaction. Atoms can not be created or destroyed (law of conservation of mass) 4. A given compound always has the same relative number of atoms (law of constant proportions) JJ Thompson correct answer: did a series of plum pudding experiments with cathode ray tubes ...

Chemistry the study of matter and the changes that matter undergoes Matter Anything that has a mass and occupies space Observations Natural phenomena and measured events; if universally consistent, can be stated as a law Hypothesis Tentative explanation that explains observations Experiment Procedure to test hypothesis; measures one variable at a time Model (Theory) Set of conceptual assumptions that explains data from accumulated experiments; predicts re...

ACS Gen Chem 1 Exam 89 Questions with Verified Answers Extensive Property - CORRECT ANSWER Values that depend on how much you have Intensive property - CORRECT ANSWER Independent of size sample Density - CORRECT ANSWER Mass/volume Homogeneous mixture - CORRECT ANSWER Same throughout, indistinguishable parts Heterogeneous - CORRECT ANSWER Different parts, distinguishable parts Diatomic elements - CORRECT ANSWER N2, O2, H2, Cl2, Br2, I2 John dalton - CORRECT ANSWER Founded the...

Chapter 1 Chemistry: The Science of Change 1. What is a unifying principle that explains a body of experimental observations? A. law B. hypothesis C. theory D. phenomena E. prediction Accessibility: Keyboard Navigation Bloom's Level: 2. Understand Chapter: 01 Chemistry: The Science of Change Difficulty: Easy Subtopic: Scientific Method Topic: Study of Chemistry 2. Which of the following is a tentative explanation for a set of observations? A. law B. hypothesis C. theory D. phenomen...

ACS Chemistry Final Exam 182 Questions with Verified Answers Layout of an element (mass # & atomic #) - CORRECT ANSWER atomic number = - CORRECT ANSWER # of protons mass number = - CORRECT ANSWER # of protons + neutrons the number of protons in a neutral atom will equal the - CORRECT ANSWER # of electrons how to find the correct number of neutrons - CORRECT ANSWER mass number - atomic number Forms of the same elements that differ in amount of neutrons - CORRECT ANSWER isotopes...

Honors Chemistry Semester 1 Final Review 2024 Questions and Answers 100% Pass independent variable - Answer- variable that will change dependent variable - Answer- value that changes when the independent variable change chemistry - Answer- the study of the composition of matter and its change inertia - Answer- resistance to a change in motion qualitative data - Answer- descriptive, non numeric information quantitative data - Answer- definite numerical information hypothesis - Answer- te...

law of conservation mass - correct answer mass is neither destroyed or created during ordinary chemical or physical reactions law of definite proportions - correct answer a chemical compound contains the same elements in exactly the same proportions by mass regardless of the size of the sample or source of the compund law of multiple proportions - correct answer if two or more different compounds are composed of the same two elements, then the ratio of the masses of the second element comb...

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. Answer: B Difficulty: 1 Easy Topic: Components of Matter Bloom's: 1. Remember Subtopic: Structure of the Atom Gradable: automatic Accessibility: Keyboard Navigation 2) When J. J. Thomson discovered the electron, what physical property of the electron did he measure? A) its charge, e B) its charge-to-mass ra...

Chapter 01: Introduction 1. A tentative explanation for a set of observations that can be tested by further experimentation is referred to as A) a hypothesis. B) a law. C) a theory. D) none of the above. Ans: A Category: Easy Section: 1.2 2. A concise verbal or mathematical statement of a relationship between phenomena that is always the same under the same conditions is referred to as A) a hypothesis. B) a law. C) a theory. D) none of the above. Ans: B Category: Easy Section: 1.2 3. A un...