Grade 10 Chem

• Polyatomic

  A group of atoms, usually of different elements, that act as a single ion
• Ionic compound

  A compound that formed from one or more positively charged ions and one or more negatively charged ions
• Multivalent element

  An element that has more than one ionic charge
• Molecular element

  An element that has two or more identical atoms joined by covalent bonds
• molecular compound

  A compound formed from two or more atoms of different non-metallic elements
• Synthesis

  2 or more reactants form to create a single product
• decomposition

  A single compound breaks into 2 or more simpler substances
• single displacement

  A + BC = AC + B
• Double displacement

  AB + CD = AD + CB
• Combustion

  Hydrocarbon + O2 = CO2 + 2H20
• Neutralization

  Acid + Base = Water + a Salt
• Ph

  Power of Hydrogen
• What ph levels are acid?

  1 to 6
• What ph levels are bases

  8 to 14
• what ph level is neutral?

  7
• Universal indicator for acid

  red, orange, yellow, and pink
• universal indicator for bases

  purple and blue
• Acid

  a compound that produces hydrogen ions when dissolved in water
• Base

  A compound that form hydroxide ions OH+ when dissolved in water
• Acid Characteristics

  Corrosive, sour, conducts electricity, not slippery,
• Bases Characteristics

  corrosive, bitter, slippery, conducts electricity