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Science - check your knowledge

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  • What is a Erlenmeyer flask?
    The flask is often used for stirring or heating solutions.
  • Recall the density formula and tell the meaning of density.
    Density is the measurement of how much matter concentrates in a specific space. To calculate density = mass divided
  • Describe the process: melting.
    Melting is the change from solid to liquid.
  • What is a test tube?
    It is a small cylinder to handle chemicals.
  • what is a pestle and mortar?
    it's used to crush solids with a pestle.
  • What is mass and volume?
    Mass, measured in g; mass is how much matter there is in an object Volume, measured in ml, cm3; volume is the amount of space something takes.
  • What are the three main states of matter and describe the difference in their internal energy?
    Solid, liquid and gas. Solid = Few internal energy, Liquid = more internal energy and Gas = more energy than the rest because of the space.
  • What is a forceps?
    they are used to grab small objects fingers are way too big to grab.
  • What is a Funnel?
    Used for separating solid substances from solution.
  • What is a condenser?
    a condenser is laboratory apparatus used to condense vapours that is, turn them into liquids by cooling them down.
  • Describe the processes: Evaporation/boiling.
    Is the change from liquid to gaseous state.
  • What is the minimal particle of matter?
    Atoms.
  • What is a beaker?
    A glass container used in laboratories to hold liquid or solid samples.
  • What is a stop watch?
    used to measure time when you're doing a chemical reaction.
  • What is a petri dish?
    used to study microorganisms in laboratories.
  • What is a pipette?
    used to measure or transfer small amounts of liquid.
  • What is a bunsen burner?
    Burns gas and it produces a single gas flame.
  • What is a scale?
    A scale typically refers to handling larger volumes.
  • What is a tonge?
    It is like a large pincer.
  • What is a Graduated cylinder?
    used to measure the volume of a liquids.
  • Describe the process: Condensation.
    Is the change from gaseous to liquid.
  • What is the state of the freezing point and boiling point for water?
    Freezing - 0 degrees and boiling - 100 dregrees.
  • Say the difference between physical and chemical changes and give at least 3 examples.
    ...
  • Describe the process: Freezing
    Is the change from liquid to solid.
  • What is a ring stand?
    to support other pieces of equipment and glassware.
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