Study

States of matter

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  • What happens to the molecules of water when it freezes?
    They slow down and lock into place
  • What is the correct sequence of changes when an ice cube is left in the sun?
    Solid → Liquid → Gas
  • Give an example of freezing
    Water turning to ice, juice into popsicles, etc.
  • What happens when you heat a solid like ice?
    It melts into a liquid
  • Which state of matter are ice cubes in?
    solid
  • The mass of salt and sugar is 15 g, and pebbles and soil is 25 g. What’s the difference?
    10 g
  • Which has more mass — 40 g of marbles or 30 g of gravel?
    Marbles
  • Which state of matter spreads out to fill the entire container?
    gas
  • Name one way you can measure a liquid.
    Graduated cylinder, beaker, measuring cup
  • True or False: Gas takes the shape of its container.
    true
  • What tool is used to measure mass?
    Balance/Scale
  • Riddle → “I can be poured, I take the shape of my container, but I don’t have a definite shape. What am I?”
    liquid
  • A sealed container is filled with a substance that spreads out to fill the space but has no definite shape or volume. What state of matter is it?
    gas
  • True or False: A liquid always has a definite shape.
    false
  • Name two measurable properties of a block of wood.
    Mass, length, volume, temperature, texture, etc.
  • A student describes a rock as hard, rough, and gray. What is the student describing?
    Physical properties
  • What process happens when water boils?
    Liquid → Gas / Evaporation
  • A cup of cocoa cools from 60°C to 30°C. What is the temperature difference?
    30°C
  • Which TWO objects are magnetic: iron nail, wooden spoon, aluminum can, steel paper clip?
    Iron nail, steel paper clip)
  • Which property tells us if an object can be attracted to a magnet?
    Magnetism
  • Which state of matter has a definite shape and definite volume?
    solid