(purple) • Left Side of PT table loses electrons‚ right side gains them. • Covalent bonds formed between different elements are polar. • In a molecule with covalent bonding‚ atoms are held together by sharing electrons. • Electronegativity (EN) measures the tendency of an atom to attract electrons (increases as you move to the right) • Greater than 1.8 = Ionic‚ Between 0 and 1.8 = Polar Covalent‚ ~0 = Nonpolar covalent • Moles = Mole * (Number of electrons in element/ 1 mole) • Atoms = Moles
Free Atom Electron Chemical bond
atom based on the atomic number and to predict the number of covalent and or ionic bonds that the atom will form based on the atomic number. -electron shells-3 shells (2-8-18) -Electron Orbital-2 electrons can fit into an orbital 5- Be able to distinguish covalent‚ ionic‚ hydrogen and hydrophobic bonds on the basis of structure and strength. -Covalent-When unpaired electrons are shared by elements. Creates a Strong bond. -Ionic-When electrons are transferred from one atom to another. -Hydrogen-Weak
Free DNA Protein Atom
Chapter 2 The Components of Matter Elements‚ Compounds‚ and Mixtures: An Atomic Overview An element consists of only one kind of atom. An element is one kind of substance – the composition is fixed. Each element is unique because the properties of its atoms are unique. Molecules are structures containing two or more atoms chemically bound together. Diatomic molecules are two-atom molecules such as elemental oxygen. A compound is a type of matter in which two or more different elements are chemically
Premium Atom
formula as well as mole concept. 2. To illustrate and explain the structure of atoms based on Lewis and molecular orbital structure as well as generate electronic configurations for element. 3. To describe the type of chemical bonding (Ionic‚ covalent‚ dative covalent‚ metallic‚ hydrogen bond and van der waals force) formed between elements. 4. To understand the state of matter (solid‚ liquid and gasese) properties and solid lattice structure. 5. To describe on the kinetic theory of gas‚ gas
Free Atom Chemical bond Covalent bond
Non-Chemical Bonding in “Hydrogen”‚ “Iron”‚ and “Cerium” Despite the strong dominance of science in The Periodic Table‚ Primo Levi manages to write a compelling and moving novel about love and friendship‚ while simultaneously exploring the intricate world of chemistry. Friendship and chemistry? One might ask themselves what correlation these two contrasting‚ yet essential aspects of life might have between one another. Through complex chapters such as “Hydrogen”‚ “Iron”‚ and “Cerium”‚ it is revealed
Premium Periodic table Friendship Primo Levi
March 2‚ 2011 Lab Report Physical Properties of Two Types of Solids SCH3U0 Maggie Liu Abstract The purpose of this lab is to study some of the physical properties of two types of solids – ionic and molecular. The samples used are sodium chloride (ionic) and camphor (molecular). The physical properties studied are odour‚ hardness‚ melting point‚ solubility in water and solubility in 2-propanol. It is observed that some of the physical properties of sodium chloride are no odours‚ hard‚ a
Premium Sodium chloride Ion Ionic bond
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 2015SP-BIOL-1408-43440 Biology for Non-Science Majors I_Pebble Barbero EXAM ONE Cheating Question – I acknowledge I won’t cheat. You expose the bacteria Staphylococcus aureus to low levels of antibiotic methicillin. The surviving bacteria are then exposed to higher concentrations of methicillin and the process repeated until a strain of methicillin-resistant S. aureus (MRSA) was generated. To test your hypothesis‚ you perform an experiment
Free Cell Eukaryote Bacteria
Biology Notes 1.02 Sometimes a practice or belief claims to be science but does not follow the scientific method or cannot be proven reliable through experimentation. These practices are examples of pseudoscience‚ which literally means "fake science." Charms‚ astrology = stars‚ and phrenology= reading the bump on skull 1.03 * In the mid 1600s in the Netherlands‚ the scientist Antonie van Leeuwenhoek developed the first known microscope using a single magnifying lens. He was the first person
Premium Water Chemical bond Atom
DEFINITIONS OF OXIDATION AND REDUCTION (REDOX) This page looks at the various definitions of oxidation and reduction (redox) in terms of the transfer of oxygen‚ hydrogen and electrons. It also explains the terms oxidising agent and reducing agent. Oxidation and reduction in terms of oxygen transfer Definitions • Oxidation is gain of oxygen. • Reduction is loss of oxygen. For example‚ in the extraction of iron from its ore: [pic] Because both reduction and oxidation are going on side-by-side
Premium Hydrogen Oxide Oxidizing agent
Chemistry‚ 2014 UNIT 1 – MATTER TRENDS AND CHEMICAL BONDING History of the atom DEMOCRITUS Smallest particle of matter is called an atom Atoms are in constant motion and have empty space between them ARISTOTLE 4 element theory of matter (earth‚ air‚ water‚ fire) Had different combinations of the 4 qualities: hot‚ cold‚ dry‚ moist JOHN DALTON Expanded on Democritus’s theory: All matter is composed of tiny‚ indivisible particles All atoms of an element have identical properties
Free Atom Chemical bond Hydrogen