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Heat and Classification of Matter

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  • Blood is homogeneous or heterogeneous?
    heterogeneous
  • Tools to measure the degree of hotness or coldness of an object are ....
    Thermometers
  • Water (H2O) / Salt (NaCl) / Carbon (C) - Which one is an element?
    Carbon (C)
  • … contain only one substance.
    Pure substances
  • Mention three sources of heat!
    The sun, fire, stove, etc
  • A pot is placed directly on a stove. The pot gets hot because of ….
    Conduction
  • The diagram is shows ....
    Compound
  • Chocolate drink is homogeneous or heterogeneous?
    homogeneous
  • Give two examples of pure substances?
    salt and sugar
  • What electricity that create heat?
    microwave, oven, ricecooker, etc
  • vinegar is homogeneous or heterogeneous?
    homogeneous
  • What materials that include as conductors?
    Iron, Steel, Copper, Silver, Brass, and most of metal
  • What materials that include as insulators?
    Plastic, Rubber, Fabric, Wood, etc
  • Air is homogeneous or heterogeneous?
    homogeneous
  • What do you know about pure substance? Give three examples.
    Substance that contain only one type of substances: water, salt, sugar.
  • What is the source of heat?
    The sun, stove, fire, etc
  • Heat moves from … to ….
    hot to cold
  • Pure substances are classified to ….
    elements and compounds
  • Cooking oil and vinegar are examples of … mixture.
    homogeneous
  • A form of energy that makes things hot is ...
    Heat / Thermal
  • Salad and pizza are examples of … mixture.
    heterogeneous
  • What is the heat transfer in the room above?
    Convection
  • What type of the substances above?
    heterogeneous
  • What type of the substances above?
    heterogeneous
  • Two molecules of oxygen (O2) is the example of ….
    elements
  • What type of the substances above?
    heterogeneous
  • You sit around a campfire to stay warm because it's … heat.
    radiates
  • Heat can be transferred from one object to another in 3 different ways
    conduction, convection, and radiation
  • … contain two or more substances that are not chemically combined.
    Mixture
  • What do you know about mixtures? Give three examples.
    Substance that contain more than one type of substances: cereal in milk, boba drink, soda.
  • The handle of a metal spoon warms up when it is placed in a hot bowl of soup because of ….
    Conduction
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