Chapter 10 Chemical Compounds
Ch 10 Sec 1: Ionic and Covalent Compounds Vocabulary ionic compound covalent compound
Ionic Compounds Ionic compound formed from ionic bonds Formed from metal and non-metal
Ionic Compounds Properties Brittleness Due to crystal lattice structure
Ionic Compounds Properties High melting points Due to strong bonds Ionic compounds solid at room temp
Ionic Compounds Properties Solubility and Electrical Conductivity Ions of the compound want to bond with water, so they break apart Since positive and negative ions are in water, the water solution conducts electricity now.
Covalent Compounds Formed from covalent bonds Non-metal and non-metal bonding together Sharing valence electrons
Covalent Compounds Properties Most are not soluble in water Oil and water
Covalent Compounds Properties Low melting points Weaker bonds, so easier to break
Covalent Compounds Properties Electrical Conductivity Most are NOT conductive Some do form ions when dissolved in water
Ch 10 Sec 2: Acids and Bases Vocabulary acid indicator base
Acids and their Properties Sour taste Changes the color of indicators Litmus test paper Bromthmol blue Litmus = standard to judge against React with metals
Acids and their Properties Conducts electric Current Breaks apart in water Forms ions Ions have charges
Acids and their Properties Uses of Acids Sulfuric acid: paper, paint, detergent, fertilizers Nitric acid: fertilizer, rubber, plastic Hydrochloric acid: swimming pool cleaner, separates metals Citric acid: juices and soda Acetic acid: vinegar
Bases and their Properties Bases have…. bitter taste Slippery feel Conduct electricity
Bases and their properties Change color of an indicator Base: Red paper blue
Bases and Their Properties Uses of Bases Soap and most cleaners Paper Drain cleaner Bleach toothpaste Antacids
Ch 10 Sec 3: Solutions of acid & bases Vocabulary neutralization reaction pH salt
Strengths of Acids and Bases Strong Versus Weak Acid Strength refers to number of molecules that break apart when dissolved in water Strong acids break apart more than weak acids Forms H⁺ ion Strong bases break apart more than weak bases Forms OH⁻ ion
Acids, Bases, and Neutralization Reaction between acid and base is a neutralization reaction Water and salt is formed
Acids, Bases, and Neutralization pH Scale potential of hydronium ion ( acid ) 1 to 6.9 = acid 7 = neutral 7.1 to 14 = base
Acids, Bases, and Neutralization pH affects the environment some plants need acid (pine trees) Some plants need basic soil (lettuce) Most water animals need neutral pH Acid rain has pH of 4 - 5.5
Salts By product of acid/base reaction Salt = positive ions from a metal with negative ions from a non metal