Study

Lab

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  • What is the name of the person who works in the lab?
    Scientist
  • What is a chemical pH indicator called?
    Phenolfthaleine
  • What is it?
    Microscope
  • What is it?
    Erlenmeyer flask
  • What is denser a feather or a rock?
    A rock because its molecules are closer together
  • For the light bulb to light up, how should the circuit be, open or closed?
    closed
  • What is density?
    Density is how much something weighs in relation to its size.
  • Does water have a property that allows it to maintain its temperature for a long time? YES OR NO
    Yes
  • what is the name of a natural pH indicator?
    Redcabbage or turmeric
  • What is the retinal persistence?
    It is a phenomenon of our eye where we can maintain the image for milliseconds after the image disappears.
  • What is it?
    Funnel
  • The light bulb has small ... that when heated produce light
    filaments
  • what is the action-reaction principle? Example
    It is one of Newton's law that means: Every action is followed by an equal and opposite.
  • What is it?
    Wash bottle
  • What is the surface tension?
    It is a property of water  that causes its surface to behave like an elastic membrane. This occurs because water molecules are stick together
  • What is it?
    Test tubes
  • What is the name of the gas created by fermentation?
    CO2 (carbon dioxide)
  • What is it?
    Beaker
  • What is the center of gravity?
    The center of gravity is the point where the weight of an object is balanced.
  • What is it?
    Petri dish
  • What are the positive and negative sides of batteries called?
    Terminals
  • what is fermentation?
    Fermentation is a process by which microorganisms feed on sugar and produce a gas called CO2.
  • What is pH?
    pH is a measurement scale from 0 to 14 that indicates if a substance is acid,neutral or alkaline
  • How does an elastic car work?
    main word: elastic energy