reviewwithmeme

• Matter


  Anything that occupies space and has mass
• States of matter


  • Solid
  • Liquid
  • Gas
• Temperature


  Determines the state of matter
• Chemistry is the study of matter and the changes it undergoes
• Properties of matter


  • Physical properties
  • Chemical properties
• Physical properties


  Intrinsic properties<|>Extrinsic properties
• Intrinsic properties


  • Characteristics of matter (e.g. odor, color, taste, hardness, density, boiling point)
• Intrinsic properties do not change with amount of matter, extrinsic properties do
• Chemical properties


  Identify the chemical composition of a substance (e.g. combustibility, flammability, reaction with acids/bases)
• Changes in matter


  • Physical change
  • Chemical change
• Physical change


  • Reversible, no change in chemical composition
• Chemical change


  • Irreversible, change in chemical composition
• Classification of matter


  • Pure substances
  • Mixtures
• Pure substances


  Forms of matter with unique, fixed, and definite composition
• Pure substances


  • Water
  • Hydrogen peroxide
• Mixtures


  Combinations of two or more pure substances
• Mixtures


  • Salt dissolved in water
• Pure substances


  • Elements
  • Compounds
• Elements


  • Simplest forms of matter, composed of one kind of atom
• Types of elements


  • Metals
  • Non-metals
  • Metalloids
• Metals


  • Hard, good conductors of heat and electricity, lustrous
• Non-metals


  • Soft, poor conductors of heat and electricity, brittle, non-lustrous
• Metalloids


  • Exhibit both metallic and non-metallic properties
• Compounds


  Combinations of two or more different elements
• Types of compounds


  • Organic
  • Inorganic
• Organic compounds


  Contain carbon
• Inorganic compounds


  Do not contain carbon (with some exceptions)
• Organic compounds


  • Carbohydrates
  • Proteins
  • Lipids
  • Nucleic acids
• Inorganic compounds


  • Acids
  • Bases
  • Salts
  • Oxides
• Mixtures


  • Homogeneous
  • Heterogeneous
• Homogeneous mixtures


  Single phase, components are evenly distributed (e.g. salt dissolved in water)
• Heterogeneous mixtures


  Multiple phases, components are not evenly distributed
• Kinds of elements


  • Organic
  • Inorganic
• Inorganic compounds


  Non-carbon, with some exceptions
• Compounds


  Molecules of life, macromolecules that sustain life on Earth
• Organic compounds


  • Carbohydrates
  • Proteins
  • Lipids
  • Nucleic acids
• There is a separate lesson for organic compounds
• Inorganic compounds


  • Acids
  • Bases
  • Salts
  • Oxides
• There is a separate lesson for inorganic compounds
• Mixtures


  Can be categorized as homogeneous or heterogeneous