QUIZ 1

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Created by
kathryn

Cards (34)

  • What happens in chemical change?
    Either one substance breaks down into other substances or two or more materials combine and form new products.
  • What happens in physical change?
    A substance changes its form, but not in chemical identity.
  • What is chemistry?
    The study of matter, its properties, and how it interacts and changes.
  • How can we apply chemistry in real-life?
    1. Medicine and Healthcare
    2. Food and Agriculture
    3. Energy and Environment
    4. Consumer Products and Materials
  • What are the branches of chemistry?
    1. Organic
    2. Inorganic
    3. Physical
    4. BioChemistry
    5. Nuclear
    6. BioPhysical
    7. Polymer
    8. Quantum
    9. Environmental
    10. Analytical
  • What is an atom?
    The smallest unit of matter.
  • What is a pure substance?
    A chemical substance made of only one atom.
  • What is a compound?
    Substances made of two or more type of atoms.
  • What are mixtures?
    A physical combination of substances.
  • How are the particles of solids arranged?
    They are close together and follow a regular pattern.
  • How are the particles of liquids arranged?
    They are close together and has a random arrangement.
  • How are the particles of gases arranged?
    They are far apart from each other and has a random arrangement.
  • How do solid particles move?
    They vibrate on the spot.
  • How do liquid particles move?
    They move around each other.
  • How do gas particles move?
    They move quickly in all directions.
  • What are the two types of mixtures?
    Heterogeneous and homogeneous
  • What is a heterogeneous mixture?
    A mixture not uniform in composition and properties throughout.
  • What is a homogeneous mixture?
    A mixture with uniform composition and properties throughout. It is also called a solution.
  • What are the two types of pure substance?
    Compounds and elements
  • What is an element?
    A substance that cannot be separated into simples substances through chemical means.
  • What is porosity?
    A property of matter that quantifies the fact that there are spaces between molecules.
  • What is refractive index?
    A property which describes to which point a material is able to reflect light.
  • What is ductility?
    Property of matter which describes the possibility of matter becoming fine threads.
  • What is oxidation?
    A process that happens when an element transfers electrons to another one.
  • What is the formula for density?
    D =D\ = mv\ \frac{m}{v} (D = density, m = mass, v = volume)
  • What are the physical properties of matter?
    1. Boiling Point
    2. Melting Point
    3. Density
    4. Specific Gravity
  • What is density?

    A measure of how much matter is in an object.
  • What is specific gravity?
    The ratio between the density of a substance to the density of a standard. It is also related to buoyancy.
  • How does melting change the phase of matter?
    From solid to liquid
  • How does freezing change the phase of matter?
    From liquid to solid
  • How does evaporation change the phase of matter?
    From liquid to gas
  • How does condensation change the phase of matter?
    From gas to liquid.
  • How does sublimation change the phase of matter?
    From solid to gas
  • How does deposition change the phase of matter?
    From gas to solid