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Olympiad (Class 4) Matter and Materials — practice questions

Explore 43 free Matter and Materials questions in Olympiad (Class 4) Science. Open each question or exercise to read its content, reference answers and available explanation.

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Matter and Materials questions and exercises with answers

Showing questions 1–30 of 43.

Rita pours juice from a jug into a tall glass. What happens to the juice?Read the answer and worked solution →A stone is moved from a bowl to a cup. Which statement is true about the stone?Read the answer and worked solution →Which of these has no fixed shape and no fixed volume?Read the answer and worked solution →Which state of matter has a fixed volume but no fixed shape?Read the answer and worked solution →Sam has 200 mL of milk in a bottle. He pours all of it into a wide bowl. How much milk is in the bowl?Read the answer and worked solution →Why is it easy to squeeze air in a bicycle pump but hard to squeeze water?Read the answer and worked solution →In which state of matter are the particles closely packed and hard to move past each other?Read the answer and worked solution →Which one of these is a mixture of gases?Read the answer and worked solution →What happens to a liquid when it is cooled below its freezing point?Read the answer and worked solution →A pan of water on a stove is heated until it bubbles hard. At this boiling point the water changes into what?Read the answer and worked solution →Which of these is a metal that is liquid at room temperature?Read the answer and worked solution →Why are cooking pans often made of metal?Read the answer and worked solution →Electric wires in a home are often made of copper. What property of copper is the reason?Read the answer and worked solution →A mixture of two or more elements in which the main part is a metal is called what?Read the answer and worked solution →Steel is used to make bridges and railway tracks. Steel is mainly iron mixed with a little of what?Read the answer and worked solution →A shiny metal spoon does not let light pass through it. What word describes this?Read the answer and worked solution →An ice cube is put in a glass of water. What does the ice do, and why?Read the answer and worked solution →Glass and plastic have no neat repeating pattern of particles. What are such solids called?Read the answer and worked solution →Which of these is a crystalline solid?Read the answer and worked solution →Common salt is a solid made of tiny crystals. What is the chemical name of common salt?Read the answer and worked solution →A rubber band is stretched and then let go, and it goes back to its old shape. What is this property called?Read the answer and worked solution →Aman bends a thin iron wire a lot and it stays bent. Which property does this show?Read the answer and worked solution →Why are steel beams chosen to hold up buildings?Read the answer and worked solution →A metal railway track is heated by the hot sun all day. What happens to its length?Read the answer and worked solution →Dry ice is solid carbon dioxide. When it warms up in the open, what does it turn into without becoming a liquid?Read the answer and worked solution →Which of these can be made by cooling a gas until it becomes a liquid?Read the answer and worked solution →Most solids turn into a liquid when heated. What is the temperature at which this happens called?Read the answer and worked solution →Honey pours slowly and water pours fast. Which word tells how much a liquid resists flowing?Read the answer and worked solution →Cold honey from a fridge is hard to pour. What will warming it do?Read the answer and worked solution →A small drop of water on a leaf looks round like a ball. What pulls the water into this shape?Read the answer and worked solution →

Worked practice questions

Rita pours juice from a jug into a tall glass. What happens to the juice?

  1. It takes the glass shape
  2. It keeps the jug shape
  3. It turns into a gas
  4. It becomes a hard block
Show answer and solution

Correct answer: A. It takes the glass shape

Juice is a liquid, so it has no fixed shape and fills the inside of whatever holds it.

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A stone is moved from a bowl to a cup. Which statement is true about the stone?

  1. It spreads out to fill the cup
  2. It becomes the shape of the cup
  3. It keeps its own shape
  4. It floats up as a gas
Show answer and solution

Correct answer: C. It keeps its own shape

A solid has a fixed shape, so it does not flow into the shape of its container.

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Which of these has no fixed shape and no fixed volume?

  1. Air in a room
  2. An iron nail
  3. Water in a cup
  4. A wooden ruler
Show answer and solution

Correct answer: A. Air in a room

A gas spreads out to fill any space, so it has neither a fixed shape nor a fixed volume.

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