Scattering experiment Study guides, Revision notes & Summaries

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...

CHAPTER 3: Chemical Foundations: Elements, Atoms, and Ions 1. What is the most abundant element on the Earth (including the crust, oceans, and atmosphere)? A. silicon B. oxygen C. hydrogen D. iron E. carbon ANS: B PTS: 1 TOP: Test: Chapter Test NOT: worldofchem_2013 2. What is the most abundant element found in the human body? A. oxygen B. water C. hydrogen D. calcium E. carbon ANS: A PTS: 1 TOP: Test: Chapter Test NOT: worldofchem_2013 3. The symb...

Chapter 3—Atoms and the Periodic Table MULTIPLE CHOICE 1. Which combination of individual and contribution is not correct? a. Antoine Lavoisier - clarified confusion over cause of burning b. John Dalton - proposed atomic theory c. Marie Curie - discovered radium and polonium d. Robert Millikan - discovered the neutron ANS: D 2. John Dalton did his research work in which of the following countries? a. France b. Greece c. Russia d. England ANS: D 3. Which radiation type has no detect...

Chapter 2: Atoms, Molecules, and IonsIn a cathode ray tube A) electrons pass from the anode to the cathode. B) electrons pass from the cathode to the anode. C) protons pass from the anode to the cathode. D) protons pass from the cathode to the anodeThe scientist who determined the magnitude of the electric charge of the electron was A) John Dalton. D) Henry Moseley. B) Robert Millikan. E) R. Chang. C) J. J. ThomsonWhen J. J. Thomson discovered the electron, what physical property of the electron...

matter everything states of matter solid liquid gas plasma 10 Must-Have Accessories for Sprucing Up Your Caravan homogeneous uniform throughout heterogeneous not uniform throughout law of constant composition all samples of a given chemical compound have the same elemental composition by mass law of multiple proportions elements combine in small whole number ratios to form compounds law of conservation of mass total amount of mass remains constant Dalton's law in a mixture of n...

Question 1 Question Answers Extra information Mark 01.1 gas 1 01.2 reactivity decreases as you go down the group the outer electrons are farther from the nucleus less attraction between the outer electrons and the nucleus (so) the electron is gained less easily Allow converse argument throughout. Allow more energy levels/ shells. Allow more shielding. 1 1 1 1 01.3 potassium chloride bromine Answers in either order. 1 1 01.4 displacement (reaction) 1 01.5 no reaction be...

AQA A Level Physics Questions and Answers 2022/2023 Longitudinal wave Particle vibration is parallel to direction of wave propagation Examples of a longitudinal wave Sound waves, seismic p-waves Transverse wave Particle vibration is perpendicular to direction of wave propagation Only transverse waves can be polarised Examples of a transverse wave Electromagnetic radiation, seismic s-waves Particle displacement The distance of a particle from its equilibrium pos...

PSY 1000: Final Exam Objectives | 2022 LATEST UPDATE PSY 1000: Final Exam Objectives Chapter 1: What is Psychology Module 1.1 Psychologists’ Goals 1. Define “psychology” and explain why psychology is a science a. The discipline that scientifically studies behavior, experiences, and/or mental processes i. It is not: being intuitive, speculations about behavior, common sense, or only about mental disorders 2. Be able to identify subspecialties of psychology. Know what psycholog...

AQA Physics GCSE Questions And Answers 2022/2023 What is the radius of an atom? Around 10^-10m What is the basic structure of an atom? A positively charged nucleus composed of both protons and neutrons surrounded by negatively charged electrons What fraction of the atom is the radius of the nucleus? 1/10,000th Most of the mass of an atom... ...is concentrated in the nucleus How can electron arrangements change in an atom? 1. Absorption of electromagnetic radiati...

SCIN131 Week 2 Quiz Released: Jun 25, 2021 11:55 PM Your quiz has been submitted successfully. 3 / 3 points `Which of the following statements is true as stated by the chemist Joseph proust? Question options: All atoms of a given element have a constant composition and are different than atoms of any other element. The nucleus is a dense region of positive charge that always contains protons and neutrons. Matter cannot be either created or destroyed in a chemical reaction. Hide Fe...