Science Q1

• Matter


  Anything that takes up space
• Solids


  • Has fixed shape and volume
• Na hirey Marie
• Liquids


  • Has fairly fixed volume but shape varies with container
• Gases


  • Has both volume and shape are variable
• Plasma


  • Also known as ionized gas, has both volume & shape variable
• Types of Matter


  • Substances or Pure substances
  • Compounds
• Substances or Pure substances


  Cannot be separated into different types of matter by any physical means
• Atoms


  In a pure substance can be separated only by chemical changes
• Elements


  Are pure substances that are made of only one type of matter
• Atom


  The smallest possible particle of an element
• Compound


  Are composed of more than one type of matter
• Molecule


  The smallest possible particle of a compound that retains the properties of a compound
• Mixture


  A material made up of two or more substances
• Types of Mixtures


  • Homogeneous Mixtures
  • Heterogeneous Mixtures
• Physical Properties of Matter

  • Ductility
  • Lustre /Lustrious
  • Malleability
  • Hardness
  • Texture
  • Britteness
• Chemical Properties


  The ability of a substance to reach with other substances, or to transform from one substance to another
• Physical Change


  A change in form of a substance without a change in its identifying identity or chemical makeup
• Chemical Change


  A change in the identity of a substance
• Mixture are combination of solids, liquids and gases
• Homogeneous Mixture


  A mixture in which the composition is uniform throughout the mixture
• Homogeneous Mixture


  • Mixture of salt & water, a mixture of sugar & water, air
• Solution


  A homogeneous mixture of two or more components in a single state. A solution always has a substance that is dissolved & a substance that is dissolving
• Solute


  The substance that is dissolved
• Solvent


  The dissolving agent
• Heterogeneous Mixture


  A mixture in which the composition is not uniform throughout the mixture
• Phase


  Any part of a sample that has a uniform composition and properties
• Colloid


  A heterogeneous mixture in which particles are evenly distributed throughout another substance but not dissolved
• Colloid


  • Butter, Milk, Shampoo, Whipped Cream, Cloud, Mayonnaire
• Suspension


  A heterogeneous mixture that contain particles huge enough to be seen by your naked eye
• Methods to separate mixtures

  • Picking by hand
  • Decantation
  • Sieving
  • Filtration
  • Evaporation
  • Magnetic Separation
• Picking by Hand


  The method in which substance in a mixture can be separated by just picking them out with the help of hand
• Decantation


  To pour off of upper liquid layer, used to separate a liquid from an insoluble solid
• Sieving


  A simple technique for separating particles of different sizes using a sieve with small holes
• Filtration


  Used to separate heterogeneous mixtures composed of solids and liquids
• Evaporation


  Used to separate a dissolved solid from a liquid, the mixture is heated until the liquid evaporates leaving the solid residue
• Magnetic Separation


  A magnet can be used to separate a magnetic substance from a non-magnetic substance
• Picking by Hand


  • Separating insect from rice, Separating beans from its color, & Separating fresh vegetables from rotten
• Decantation


  • Oil and Water, Dirt and Water, Milk and Cream, Gasoline and Water
• Sieving


  • Fine Flour, Stones and Pebbles