Electron dot diagram - Study guides, Class notes & Summaries

Science Gizmo, Osmosis Gizmos, Gizmo Seasons Study Guide Terminologies 2024 Atom The basic unit of matter. An atom is the smallest particle of the element that still has all the properties of the element. Atoms are made up of smaller particles called protons, neutrons, and electrons. the smaller electrons orbit around a central nucleus of protons and neutrons. Atomic Number The number of protons in the nucleus of an atom. Elements are distinguished from one another by their atomic n...

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) -...

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) -...

History of the atom correct answersSolid sphere Johnson - Plum pudding (-ve electrons) Rutherford - fired alpha particles at thin gold sheet, a few were deflected backwards - tiny +ve nucleus, surrounded by cloud of -ve electrons Electrons in shells/ energy levels Percentage yield equation correct answersactual yield/theoretical yield x 100 Making new concentrations equation correct answersvol to use = final conc/initial conc x vol required Acid-alkali titrations correct answersUse p...

Atom - The basic unit of matter. An atom is the smallest particle of the element that still has all the properties of the element. Atoms are made up of smaller particles called protons, neutrons, and electrons. the smaller electrons orbit around a central nucleus of protons and neutrons. Atomic Number - The number of protons in the nucleus of an atom. Elements are distinguished from one another by their atomic numbers. For example, any atom with 2 protons is an atom of helium. The...

Which number is equal to the number of protons in the atom? - Answer-Atomic Number No charge at all? - Answer-Neutrons (n0) Negative Charge? - Answer-Electrons (e-) Radioactive? - Answer-The atoms decay over time and emit radiation. Which isotope, Li-6 or Li-7 is the most common isotope of Lithium? - Answer-Li-7 Isotope? - Answer-An Element has the same number of protons, but different numbers of neutrons. What is a nucleus? - Answer-The center of the atom. What does Li Mean? - Answer-Lit...

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 el...

Chapter 01 - Structure and Bonding 1. Give the ground-state electron configuration for carbon (atomic number 6). ANSWER: 1s 2 2s 2 2px 1 2py 1 or 1s 2 2s 2 2p 2 POINTS: 1 2. Give the ground-state electron configuration for fluorine (atomic number 9). ANSWER: 1s 2 2s 2 2px 2 2py 2 2pz 1 or 1s 2 2s 2 2p 5 POINTS: 1 3. Give the ground-state electron configuration for magnesium (atomic number 12). ANSWER: 1s 2 2s 2 2p 6 3s 2 POINTS: 1 4. How many electron...

TEST BANK FOR ORGANIC CHEMISTRY WITH BIOLOGICAL TOPICS 6th EDITION ISBN : 9781260325294 ALL CHAPTERS INCLUDED. Chapter 1 1 MULTIPLE CHOICE QUESTIONS Topic: Atomic Orbitals 1. In quantum mechanics a node (nodal surface or plane) is: A) a place where Ψ is negative. B) a place where Ψ is positive. C) a place where Ψ = 0. D) a place where Ψ 2 is large. E) a place where Ψ 2 is negative. Ans: C Topic: Atomic Orbitals, Molecular Orbitals 2. When the 1s orbitals of two hydroge...

Radioactive - The atoms decay over time and emit radiation. Isotope - The same number of protons, but a different number of Neutrons. Ionized - The number of electronic do not equal the number of protons. Atom - The basic unit of a chemical element. Atomic number - the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table. Electron - a stable subatomic particle with a charge of nega...