Study

G7 Chapter 1 & 2

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  • What does the hazard symbol mean?
    biohazard: substances that pose a potential danger or risk to human life
  • Which is denser?
    Sample B
  • What does the hazard symbol mean?
    corrosive: will dissolve the structure of an object.
  • Which is the densest?
    Iron
  • Explain density.
    the amount of matter per unit volume
  • Formula of density
    mass/volume or mass:volume
  • The _______________ of a materials is the temperature at which it changes in state from a solid to a liquid.
    melting point
  • What is a hypothesis?
    A good guess or proposed explanation made on the basis of limited evidence (observation) as a starting point for further investigation.
  • State the readings given by the vernier scale.
    2.13
  • True or false: Science is the study of the natural and physical world
    true
  • 1 ton is equal to _______________ kg
    1000
  • A measure of the quantity of matter in a body.
    mass
  • A graduated cylinder, also known as measuring cylinder or mixing cylinder is a common piece of laboratory equipment used to measure the ___________________________________.
    volume of a liquid
  • Give the function of the inner jaws, outer jaws and tail of a Vernier caliper.
    inner jaws-measure the internal diameter, outer jaws-measure the external diameter, tail-measures the depth
  • ____________ are the most widely used system of units to the people of the entire world in technical and scientific research to avoid the confusion with the units.
    SI/ Systeme International d' Unites
  • Describe the following positive attitudes that we should have when carrying out scientific inquiry: objectivity, perseverance and curiosity.
    Objectivity are based on facts and are free from bias(personal opinion). Perseverance means not to give up.Curiosity is a strong desire to know or learn somethi
  • The amount of space an object occupies.
    volume
  • Which instrument is most suitable to use to measure the waist of a person ?
    measuring tape
  • The distance between two specified points.
    length
  • Explain thermal conductivity
    is a measure of its ability to conduct heat
  • 3 major branches of Science
    Physics, Biology, Chemistry
  • What does the hazard symbol irritant mean?
    A substance that may cause irritation to the skin, eyes or inside your body.
  • 1 ml= ______L
    0.001 L
  • What is the zero error?
    + 0.06
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