apart as possible. Though there is some structural diversity in ionic compounds‚ covalent compounds present us with a world of structural possibilities. From simple linear molecules like H2 to complex chains of atoms like butane (CH3CH2CH2CH3)‚ covalent molecules can take on many shapes. To help decide which shape a polyatomic molecule might prefer we will use Valence
Premium Electron Atom Chemical bond
Part I Multiple choice or short answer questions 1) (2 points) Identify a solid a. Definite volume and no definite shape b. no definite volume and no definite shape c. definite volume and definite shape 2) (2 points) A substance composed of two or more elements in a fixed‚ definite proportion is a. A solution. b. A heterogeneous mixture. c. An alloy. d. A homogeneous mixture. e. A compound. 3) (2 points) Read the water
Premium Atom Neutron Molecule
Chapter 1 Carbon Compounds and Chemical Bonds. (Covered material: 1.1 - 1.8; 1.12 - 1.17) 1. Structural Theory – most fundamental theory of Organic Chemistry (developed independently by A. Kekule‚ A. Couper and A. Butlerov between 1858 and 1861). Organic Compounds – compounds of carbon and hydrogen. Other elements frequently found in organic compounds are: oxygen‚ nitrogen and halogens (F‚ Cl‚ Br‚ I); less frequently found are: sulfur and phosphorus. Review Periodic Table for determining valence
Premium Chemical bond Molecule Covalent bond
with the atomic theory‚ which states that all substances are composed of a large number of very small particles (molecules or atoms). In principle‚ the observable properties of gas (pressure‚ volume‚ temperature) are the consequence of the actions of the molecules making up the gas. The Kinetic Molecular Theory of Gases begins with five postulates that describe the behavior of molecules in a gas. These postulates are based upon some simple‚ basic scientific notions‚ but they also involve some simplying
Premium Ideal gas law Thermodynamics Gas
number of unit for counting is always constant. a. What is a mole? mole (mol): the SI unit used to measure the amount of a substance‚ number of representative particles. representative particle: any kind of particle such as atoms‚ molecules‚ formula units‚ electrons‚ or ions. Avogadro’s number: 6.022 136 7 x 10²³‚ volume of one mole of a gas determined by Amedeo Avagadro in 1811. B. Converting Moles to Particles and Partciles to Moles number of moles x 6.02 x 10²³ representative
Premium Atom Molecule Mole
Avogadro’s Law? Yes 4. Based on the calculated number of moles in one 1 atm of gas‚ how many molecules are in 1 atm of gas? (There are 6.022 x 1023 molecules/mole) Since all 3 gases have the same number of moles I will calculate 1 formula for all 3. 0.0062mol (6.022 x 1023 molecules/mol)= 0.0373364 →3.73 x 1022 molecules for each gas are in 1atm. 5. Even though the number of molecules in 1 atm of gas at constant pressure and temperature is identical‚ the number of atoms in the gas
Premium Ideal gas law Gas Mole
phosphatase. ZnCl2 is dissociates into Zn2+ ions. Zn2+ ions are cofactors of acid phosphatase. The catalytic activity of the enzyme can enhances Zn2+ binding. Some enzymes are catalytically active without a requirement for additional ions or molecules. In others‚ activity depends on the presence of a non-protein cofactor. Cofactors fall into two major groups; they are either metal ions or organic compounds. Acid phosphatase uses Zn2+ ions as cofactors. Tightly bound zinc atom contributes to the
Premium Hydrogen Chemistry Enzyme
The basic building block of most carbohydrate compounds is the molecule glucose. Using the Dehydration Synthesis Gizmo™‚ you will learn about the structure of a glucose molecule and how glucose molecules can be joined together to make larger carbohydrate molecules. To begin‚ select the CREATE GLUCOSE tab. 1. Look at the chemical formula for glucose. How many carbon (C)‚ hydrogen (H)‚ and oxygen (O) atoms are found in a molecule of glucose? C:6 H:12 O:6 2. Turn on Show chemical structure
Premium Oxygen Water Chemical bond
reaction wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side. A Coefficient is the number that normally appears at the beginning of a term in a chemical equation. It indicates the number of molecules or atoms that were involved in the chemical reaction. 1. H2 + Br2 -----> 2HBr 2. Potassium Chlorate ----> Potassium Chloride + Oxygen = KClO3 ------> KCl + O2 KClO3 ------> KCl + O2 Balanced = 2KClO3 ------> 2KCl + 3O2 3. FeCl3 + 3NaOH
Free Chemical reaction Chlorine Chemistry
bonds with water molecules. A hydrate is a compound that incorporates water molecules into its crystalline lattice structure (McGraw-Hill Ryerson‚ 2014). Identifying a compound as hydrated or anhydrous is important as the mass of the compound increases if it contains water molecules. In nature‚ hydrates exist with a fixed ratio of water molecules bound to each formula unit. These salts are able to release water to become anhydrous‚ or the anhydrous compound can absorb water molecules into their ionic
Premium Chemistry Water Molecule