SCIENCE

• study of matter

  Chemistry
• basic unit of matter

  ATOM
• building black of matter

  Atom
• 3 subatomic particles


  Protons

  neutrons

  electrons
• found inside the nucleus

  protons

  neutron
• found outside the nucleus

  electrons
• negative charge

  electrons
• main character of chemical bonding

  electrons
• occupies space and has mass

  matter
• does not occupy space and do not have a mass

  non-matter
• examples are light, heat, energy and sound

  non-matter
• matter has two types

  Mixture and Pure substances
• Pure substances has two elements

  elements and compound
• elements has three type

  metal, non metal, metalloids
• mixtures have two types

  homogenous and heterogenous
• same atom, same molecules, exact properties and compositions

  pure substances
• one type of atom

  element
• cannot break down

  element
• 118 elements in periodic table
• first elements in the periodic table is

  hydrogen
• last element of the periodic table is

  oganesson
• • usually solid
  • good conductor of heat and electricity

  metals
• toxic and dangerous

  mercury
• can melt in 37 degrees celcius

  gallium
• • poor conductor of heat and electricity
  • usually ends with "en" and "ine"

  non metals
• combination of metals and non metals

  metalloids
• known as semi metals

  metalloids
• • two or more types of atom
  • element + elements
  • can break down through chemical process

  compound
• had hydroxyl

  alcohol
• hydroxyl symbol is

  O-H
• perfumes, colognes

  alcohol
• perfumes, colognes, food coloring, artificial flavoring

  ester
• all are NON-METALS

  Covalent bonds
• has metals and non-metals

  IONIC BOND
• physical combination

  MIxture
• single phase

  HOMOGENOUS MIXTURE
• are dissolved

  solute
• the one who will dissolve

  solvent
• water + salt


  brine
• water + acetic acid


  vinegar