SCIENCE 6

• Mixtures


  Forms of matter that are composed of two or more substances
• Types of mixtures


  • Heterogeneous
  • Homogeneous
• Homogeneous mixtures


  Mixtures wherein the substances used cannot be distinguished from one-another
• Homogeneous mixtures


  • Wine
  • Air
  • Sugar water
• Heterogeneous mixtures


  Mixtures that contain 2 or more phases, where the ingredients can be told apart
• Heterogeneous mixtures


  Non-uniform mixtures
• Homogeneous mixtures


  Uniform mixtures
• Solutions


  The most common type of homogeneous mixtures
• How solutions are formed

  1. 1 substance is dissolved in another

  2. Consist of solvent and solute

  3. Solvent is used to dissolve the solute

  4. Solvent is always greater in amount than the solute
• Water


  The universal solvent because it can dissolve all states of matter
• Suspension


  Mixture where heavier substances settle on the bottom
• Colloid


  Mixture where substances do not dissolve but do not settle either, remaining dispersed
• Separation methods for mixtures

  • Winnowing
  • Magnetizing
  • Sedimentation
  • Decantation
  • Evaporation
  • Filtration
  • Distillation
• Winnowing


  • Separating rice husks from grains
• Sedimentation


  Process of letting sediments settle on the bottom of the mixture
• Decantation


  Pouring out the substance above the mixture after sedimentation
• Evaporation


  Putting the mixture above fire to let the water or liquid evaporate
• Filtration


  Using a filter such as cloth to take out solid from liquid
• Distillation


  Separating liquid to liquid mixtures to purify them
• Integumentary system


  Protects the body from diseases, maintains body temperature, prevents water loss, and eliminates waste products
• Components of the integumentary system

  • Nails
  • Hair
  • Skin
• Skin


  The largest organ in the human body
• Layers of the skin

  • Epidermis
  • Dermis
• Epidermis


  The outermost layer of the skin that can be touched
• Dermis


  Contains nerve endings, blood vessels, oil and sweat glands, and melanocytes
• Melanocytes


  Cause the skin to be fair or dark
• Hair


  Grows from the hair follicle, each connected to an oil gland
• Nails


  Formed in nail roots found under the skin, with the nail plate and cuticle
• Acne


  Skin disorder caused by inflammation of sebaceous or oil glands, common in teenagers due to hormonal changes
• Eczema


  Medical condition causing visible patches or rough and scaly skin that becomes inflamed, with blisters, itching and bleeding
• Psoriasis


  Long-term chronic skin disease causing rapid skin cell production and silver, white or red patches called plaque
• Skin cancer


  Malignant cancer cells detected on the epidermis, caused by overexposure to UV rays and genetic factors
• Musculoskeletal system


  Helps with daily activities, consists of bones, muscles, joints, tendons, ligaments, and cartilage
• Skeleton


  Serves as the body's framework, determines the shape of the body, and protects soft and delicate parts and organs
• Bone tissues


  • Compact
  • Cancellous
• Compact bone


  The hard outer layer
• Cancellous bone


  The soft and spongy inner layer made up of organic matter, minerals, and tissues
• Bone marrow


  Produces red blood cells, and stores minerals and fats
• An adult human being possesses a total of 206 bones of varying shapes and sizes
• Parts of the skeleton

  • Axial
  • Appendicular