Bohr theory - Study guides, Class notes & Summaries

AC HPAT Chemistry Questions All Correct Answers single displacement - ANSWER- A + BC --> AC + B double displacement - ANSWER- AB + CD --> AD + CB precipitate - ANSWER- A solid that forms from a solution during a chemical reaction. energy level - ANSWER- Energy levels (also called electron shells) are fixed distances from the nucleus of an atom where electrons may be found. What is the atomic number of an element - ANSWER- number of protons What is the mass number of an element - A...

Atom correct answer Smallest particle of an element that retains the properties of the element The number of protons equal _____correct answer The number of electrons Electron correct answer A negatively charged, fast-moving particle with an extremely small mass that is found in all forms of matter and moves through the empty space surrounding an atoms nucleus Proton correct answer A subatomic particle carrying a charge equal to but opposite that of an electron Neutron correct answer...

Chapter 03 - Atoms and Elements 1. The most abundant element in the earth's crust by mass is: a. Hydrogen b. Carbon c. Oxygen d. Silicon e. Nitrogen ANSWER: POINTS: 2. Which of these statements about atoms is incorrect? a. Atoms are the smallest visible amount of an element. b. Atoms are composed of protons, neutrons, and electrons. c. Atoms are the building blocks of all matter. d. Atoms are the smallest identifiable unit of an element. e. There are 91 different naturally occurrin...

General Science: Content Knowledge 5435 Practice Questions and Answers | 100% Pass Which of the following guidelines should be used when collecting data during an experiment? - Answer️️ -Vary only one factor at a time when studying how a system responds. Which of the following is equivalent to 1 × 10*-3 g? - Answer️️ -1 milligram Which of the following characteristics is most important in demonstrating that a hypothesis should be called a theory? - Answer️️ -It provides an e...

AC HPAT Chemistry Questions All Correct Answers single displacement - ANSWER- A + BC --> AC + B double displacement - ANSWER- AB + CD --> AD + CB precipitate - ANSWER- A solid that forms from a solution during a chemical reaction. energy level - ANSWER- Energy levels (also called electron shells) are fixed distances from the nucleus of an atom where electrons may be found. What is the atomic number of an element - ANSWER- number of protons What is the mass number of an element - A...

BIOL 235 Human Anatomy and Physiology Assignment 3 Questions and correct Answers (Correctly Explained). 1. Some patients who suffer from hypertension (high blood pressure) are prescribed medications that are in the category of angiotensin-converting enzyme (ACE) inhibitors. Explain why these drugs are used to combat hypertension. When blood volume falls or blood flow to the kidneys decreases, juxtaglomerular cells in the kidneys secrete renin into the bloodstream. In sequence, renin and ang...

BIOL 235 Human Anatomy and Physiology Assignment 3 Questions and correct Answers (Correctly Explained). 1. Some patients who suffer from hypertension (high blood pressure) are prescribed medications that are in the category of angiotensin-converting enzyme (ACE) inhibitors. Explain why these drugs are used to combat hypertension. When blood volume falls or blood flow to the kidneys decreases, juxtaglomerular cells in the kidneys secrete renin into the bloodstream. In sequence, renin and ang...

The area in Asia that first discovered magnets is known as? - Answer Magnesia The first magnets were called magnetites because the people that lived in the area where they were found were known as? - Answer Magnetes For centuries, sailors use magnets for which of the following purposes? - Answer To navigate the seas Which of the following people named the ends of the magnet north and south poles? - Answer Petrus peregtinus de Maricourt In 1825, the British scientist, William Surgeon,...

Schrodinger (1925) Continued upon Bohr's findings to determine where electrons are typically found. Heisenberg (1927) Created the heisenberg uncertainty principle because you never can predict where the electron is. (Breaking Bad) De Broglie (1924) Electrons act like waves around the atom. Niels Bohr (Bohrbit) (1913) Electrons can orbit the nucleus in certain special orbits at different energy levels around the nucleus. Earnest Rutherford (foil) (1910) Fired beam of alpha particles at thin ...

Chapter 1 - Chemical Foundations 1. Consider contains: a. b. c. d. e. ANSWER: POINTS: the element indium, atomic number 49, atomic mass 114.8 g. The nucleus of an atom of indium-112 ANSWER: POINTS: 4. The atomic mass of stable isotope? a 1 49 protons, 63 neutrons, 49 electrons. 49 protons, 49 neutrons. 49 protons, 49 alpha particles. 49 protons, 63 neutrons. 49 protons, 112 neutrons. 2. A hypothetical element consists of two isotopes of masses 78.95 amu and 80.95 amu with abundances ...