finished 2.3 notes - Mr Schmitt
... To determine the number of electrons in an ion you need to subtract the ion charge from the atomic number ◦ EX: Calcium ion has an atomic number of 20 and a +2 ion charge.......so, its ion has 20 - 2 = 18 electrons ◦ EX: Fluorine ion has an atomic number of 9 and a -1 ion charge.......so, its ion ...
... To determine the number of electrons in an ion you need to subtract the ion charge from the atomic number ◦ EX: Calcium ion has an atomic number of 20 and a +2 ion charge.......so, its ion has 20 - 2 = 18 electrons ◦ EX: Fluorine ion has an atomic number of 9 and a -1 ion charge.......so, its ion ...
The production and use of metals
... Know that steel is recycled on a large scale and that recycling steel saves 50% of the energy used in the extraction of iron, helps to conserve iron ore and also cuts down on the emission of greenhouse gases Evaluate the social, economic and environmental impact of the use and extraction of metals ...
... Know that steel is recycled on a large scale and that recycling steel saves 50% of the energy used in the extraction of iron, helps to conserve iron ore and also cuts down on the emission of greenhouse gases Evaluate the social, economic and environmental impact of the use and extraction of metals ...
TDDFT as a tool in chemistry
... Photochemistry, a sub-discipline of chemistry, is the study of the interactions between atoms, small molecules, and light (or electromagnetic radiation). […] Photochemistry may also be introduced to laymen as a reaction that proceeds with the absorption of light. Normally a reaction (not just a phot ...
... Photochemistry, a sub-discipline of chemistry, is the study of the interactions between atoms, small molecules, and light (or electromagnetic radiation). […] Photochemistry may also be introduced to laymen as a reaction that proceeds with the absorption of light. Normally a reaction (not just a phot ...
Acquiring the Foundation: The Periodic Table for Middle
... The unit's final project will be an animated periodic table. The student will construct an animated periodic table of the first eighteen elements on the periodic table of elements. The animated periodic table of elements will be organized according to the same principles Mendeleyev used when he pla ...
... The unit's final project will be an animated periodic table. The student will construct an animated periodic table of the first eighteen elements on the periodic table of elements. The animated periodic table of elements will be organized according to the same principles Mendeleyev used when he pla ...
Always in Motion
... The single electron would be found in the "K" shell and the "s" suborbital. If you go on to learn about chemistry, you may see its description written as 1s1. Helium (He) is still in the K shell (top row), but it has two electrons. The first electron would be 1s1 and the second would be 1s2. What ab ...
... The single electron would be found in the "K" shell and the "s" suborbital. If you go on to learn about chemistry, you may see its description written as 1s1. Helium (He) is still in the K shell (top row), but it has two electrons. The first electron would be 1s1 and the second would be 1s2. What ab ...
Nucleus - schoolphysics
... Light nuclei such as hydrogen and carbon usually contain as many protons as neutrons but the nuclei of heavy elements such as iron, radium or uranium contain many more neutrons than protons. You can find a list of the structure of many nuclei in Nuclear physics/Elements. One big problems with this m ...
... Light nuclei such as hydrogen and carbon usually contain as many protons as neutrons but the nuclei of heavy elements such as iron, radium or uranium contain many more neutrons than protons. You can find a list of the structure of many nuclei in Nuclear physics/Elements. One big problems with this m ...
Chap 9 Redox Review Q`s
... (ii) State the products formed and give equations showing the reactions at each electrode. ...
... (ii) State the products formed and give equations showing the reactions at each electrode. ...
Covalent bond - general description 1H: 1s : F • + • F : → : F : F
... hybridisation. s-orbitals are spherical and have no directionality in space while p-orbitals are oriented 90° to one another. A theory was needed therefore to explain why molecules such as water, ammonia (NH3) or methane (CH4), instead of 90° had observed bond angles of 105°, 107° and 109,5° respect ...
... hybridisation. s-orbitals are spherical and have no directionality in space while p-orbitals are oriented 90° to one another. A theory was needed therefore to explain why molecules such as water, ammonia (NH3) or methane (CH4), instead of 90° had observed bond angles of 105°, 107° and 109,5° respect ...
Is That a Fact!
... Imagine that you cut something in half. Then, you cut each half in half again, and so on. Could you keep cutting the pieces in half forever? Around 440 BCE, a Greek philosopher named Democritus (di MAHK ruh tuhs) thought that you would eventually end up with a particle that could not be cut. He call ...
... Imagine that you cut something in half. Then, you cut each half in half again, and so on. Could you keep cutting the pieces in half forever? Around 440 BCE, a Greek philosopher named Democritus (di MAHK ruh tuhs) thought that you would eventually end up with a particle that could not be cut. He call ...
Slideshow
... With different numbers of protons and electrons, this atom is now called an ION. 2. The charge on each proton is +1, and there is one proton. Each electron has a charge of -1, but there aren’t any electrons. If we add those up, we get a total charge of +1 on this ion ...
... With different numbers of protons and electrons, this atom is now called an ION. 2. The charge on each proton is +1, and there is one proton. Each electron has a charge of -1, but there aren’t any electrons. If we add those up, we get a total charge of +1 on this ion ...
12.2 Niels Bohr
... jump from an inner orbit to an outer one. When the electron falls back to the inner orbit, it releases that energy in the form of visible light. An institute, then a Nobel Prize ...
... jump from an inner orbit to an outer one. When the electron falls back to the inner orbit, it releases that energy in the form of visible light. An institute, then a Nobel Prize ...
105
... gen. Make sure there are two iodine atoms for every oxygen atom. O2 + 4I− → 2I2 Step 7 No other reactants or products can be balanced by inspection. Step 8 The reaction occurs in basic solution. As you learned in section ...
... gen. Make sure there are two iodine atoms for every oxygen atom. O2 + 4I− → 2I2 Step 7 No other reactants or products can be balanced by inspection. Step 8 The reaction occurs in basic solution. As you learned in section ...
Basic Chemistry Part 1 Presentation
... nucleus holding up to 2 electrons L or 2nd Shell – can hold up to a maximum of 8 electrons M or 3rd shell – can hold up to a maximum of 18 electrons ...
... nucleus holding up to 2 electrons L or 2nd Shell – can hold up to a maximum of 8 electrons M or 3rd shell – can hold up to a maximum of 18 electrons ...
Role of Water as a Solvent
... reduced in the following examples 2 Ag NO3 (aq) + Cu (s) Æ Cu(NO3) 2(aq) + 2 Ag (s) • Identify the oxidizing and reducing agents in ...
... reduced in the following examples 2 Ag NO3 (aq) + Cu (s) Æ Cu(NO3) 2(aq) + 2 Ag (s) • Identify the oxidizing and reducing agents in ...
atom
... 3- Atoms of different elements can combine in simple whole number ratios to form compounds. 4 – Chemical reactions occur when atoms are separated, joined or rearranged. However, atoms of one element are not changed into atoms of another element by a chemical reaction. NC Competency Goal 2 ...
... 3- Atoms of different elements can combine in simple whole number ratios to form compounds. 4 – Chemical reactions occur when atoms are separated, joined or rearranged. However, atoms of one element are not changed into atoms of another element by a chemical reaction. NC Competency Goal 2 ...
Year Review Booklet (optional)
... Bohr came up with an atomic model to explain the spectrum of ______________________. He said that the atom has certain _______________ levels which are allowed. These levels corresponded to ____________________ in which electrons move. If an electron absorbs a certain photon of energy, it will jump ...
... Bohr came up with an atomic model to explain the spectrum of ______________________. He said that the atom has certain _______________ levels which are allowed. These levels corresponded to ____________________ in which electrons move. If an electron absorbs a certain photon of energy, it will jump ...
TEST-Atomic Structure
... ____ 28. What is the difference between an atom in the ground state and an atom in an excited state? a. The atom in the ground state has less energy and is less stable than the atom in an excited state. b. The atom in an excited state has one fewer electron than the atom in the ground state. c. The ...
... ____ 28. What is the difference between an atom in the ground state and an atom in an excited state? a. The atom in the ground state has less energy and is less stable than the atom in an excited state. b. The atom in an excited state has one fewer electron than the atom in the ground state. c. The ...
AP Chemistry Summer Assignment
... For those students who have already taken a high school chemistry course, much of the material in the summer packet will be familiar to you. For those students who will be taking AP Chemistry as your first high school chemistry course, the problems will help you build a foundation in chemistry and i ...
... For those students who have already taken a high school chemistry course, much of the material in the summer packet will be familiar to you. For those students who will be taking AP Chemistry as your first high school chemistry course, the problems will help you build a foundation in chemistry and i ...
Chronology of Discoveries in Atomic Structure
... are made up of minute, discrete, indivisible, and indestructible particles called atoms. These atoms maintain their identity through all physical and chemical changes. 2) Atoms of the same element have the same properties. Atoms of different elements have different properties. 3) Atoms of the same e ...
... are made up of minute, discrete, indivisible, and indestructible particles called atoms. These atoms maintain their identity through all physical and chemical changes. 2) Atoms of the same element have the same properties. Atoms of different elements have different properties. 3) Atoms of the same e ...
Unit 1 Matter review
... made to glow by passing an electric current through them. • Based on his observations, Bohr proposed that electrons surround the nucleus in specific “energy levels” or “shells.” ...
... made to glow by passing an electric current through them. • Based on his observations, Bohr proposed that electrons surround the nucleus in specific “energy levels” or “shells.” ...
AP Semestar Exam REVIEW
... ____ 22. Which of the following are strong bases: NH3, NaOH, Ba(OH)2, and HF? a. NH3 and HF b. NaOH and Ba(OH)2 c. NH3 and NaOH d. NaOH, Ba(OH)2, and HF e. NH3, NaOH, Ba(OH)2, and HF ____ 23. What is the net ionic equation for the reaction of lithium hydroxide with hydroiodic acid? a. H+ + I- HCl( ...
... ____ 22. Which of the following are strong bases: NH3, NaOH, Ba(OH)2, and HF? a. NH3 and HF b. NaOH and Ba(OH)2 c. NH3 and NaOH d. NaOH, Ba(OH)2, and HF e. NH3, NaOH, Ba(OH)2, and HF ____ 23. What is the net ionic equation for the reaction of lithium hydroxide with hydroiodic acid? a. H+ + I- HCl( ...
Atomic Structure and Function
... • Gas (no definite shape nor definite volume) • Liquid (definite volume but no definite shape) • Solid (definite shape and definite volume) ...
... • Gas (no definite shape nor definite volume) • Liquid (definite volume but no definite shape) • Solid (definite shape and definite volume) ...
Chemistry - RESONANCE PCCP IDEAL for NTSE, IJSO, Olympiads
... In case of ionic compounds like NaCl, Na2CO3 etc., formality is used in place of molarity. The formality of a solution is defined as the number of gram formula masses of the solute dissolved per litre of the solution. It is represented by the symbol ‘F’. The term formula mass is used in place of mol ...
... In case of ionic compounds like NaCl, Na2CO3 etc., formality is used in place of molarity. The formality of a solution is defined as the number of gram formula masses of the solute dissolved per litre of the solution. It is represented by the symbol ‘F’. The term formula mass is used in place of mol ...