Learning Goal: To understand how the scientific method can be used to search for explanations of nature. The scientific method is a procedure used to search for explanations of nature. The scientific method consists of making observations‚ formulating hypotheses‚ designing and carrying out experiments‚ and repeating this cycle. Observations can be either quantitative or qualitative. Quantitative observations are measurements consisting of both numbers and units‚ such as the observation that ice melts
Premium Scientific method Science Theory
Rules for Naming and Writing Compounds I. Ionic Bonds • bonding between a metal and non-metal or the bond between a positive ion and a negative ion forming a binary compound. • end in the suffix "ide" • Or bonding between a metal and a complex ion. Steps in writing formulas: • • • • Use a periodic table of elements and of ions. Write the symbol and charge of the cation first (positive ion) Write the symbol and charge of the anion next (negative ion) Use criss-cross rule to balance for an electrically
Free Ion Sodium chloride Chlorine
Test #1 Review: Chapters 1‚ 2‚ & 3 Chapter 1. Describing life and science 1. Which is the correct sequence for levels of biological organization within an organism? • Atom-molecule-organelle-cell-tissue 2. Which is the correct sequence for levels of biological organization occurring beyond the individual? • Population-community-ecosystem-biosphere 3. To be considered a living organism‚ the organism must consist of • one or more cells 4. Which is not a required characteristic of
Free Cell Eukaryote Bacteria
The Nature of biology and science Cell theory: * All organisms are made of cells and the products of cells * All cells come from pre-existing cells * The cell is the smallest organisational unit Cells have an outer membrane‚ encloses fluid contents of cell (cytoplasm) Robert Hooke (1665): observed dead cells from bark Anton van Leeuwenhoek: described living cells Matthias Schleiden: plant issues Theodor Schwann: animal tissues Bacteria found without nucleus and lacking other membrane-bound
Premium Atom Molecule Chemical bond
show any ionic charges on the products. All of these compounds are ionic compounds they will simply separate into the ions‚ there will be no new molecules made‚ as you have indicated in parts and c. Lastly‚ for B‚ there was no need to add 2 as a coefficient Mg is a metal‚ it does not exist as a diatomic molecule. (4 marks lost) 45. Both covalent and ionic substances allow water to surround it‚ and hydrate the substance. It is just that eventually the water breaks apart ionic substances
Premium Chemistry Green Color
Q1(a). What are the important characteristics of clays? Clay is an inorganic materials mineral which contain on fine particle‚ normally grain size is near about <1/256mm. It shows good plasticity in wet form but become brittle when it is dried. It is good insulter of electricity and thermal conductivity. Porosity is also another important characteristic of clay.[1‚ 2] (b)What is the structure of clays? Mostly‚ clays have layers structure. They form combination of tetrahedral silicates and octahedral
Premium Mineral Sedimentary rock Rock
the shell model for the elements carbon‚ oxygen‚ sodium and chloride? 7. What does inert mean? 8. Define chemical bond‚ molecule‚ compounds‚ and mixture. (Give examples) 9. Write a chemical equation and indicated the products and reactants. 10. What is an ion? 11. Describe the following bonds (use examples): ionic bond‚ polar covalent bond‚ nonpolar covalent bond‚ and hydrogen bond. 12. What are the properties of water? Describe each property being sure to include the following terms: hydrophobic
Premium Atom Cell Protein
Sugar is covalent and is mainly made up sucrose.The chemical formula for sugar is C12H22O11. This ingredient was added to Skittles because sugar is the source of energy in which it helps your body to operate and it adds a sweet taste. Sugar is a small white crystalline
Premium Skiing Confectionery
functional groups of organic compounds (P4) 3. interact and work together as a group‚ as well as carry out a given assignment within the stipulated time (A3) SYNOPSIS : This course covers topics related to structure‚ bonding‚ nomenclature‚ properties‚ reactions‚ synthesis and the importance of the various classes of organic compounds‚ as well as optical isomerism. CONTENTS LECTURES : 1. Introduction CONTACT HOURS 4 Electronegativity. Ionic‚ covalent and polar covalent bonds. Bond breaking
Premium Functional group Alcohol Carboxylic acid
nucleus. Ions are created when electrons move from one atom to another atom changing the charge of that atom to either positive or negative. When electrons move they form bonds. There are two types of bonds; ionic and covalent. Ionic bonds are formed through electrical forces while covalent bonds are a lot stronger and are formed when atoms are forced to share electrons. Water has different properties. One is cohesion which is the attraction between molecules of a given substance. Cohesion in water
Free Atom Chemical bond Hydrogen