Science

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Across
  1. 2. The fourth state of matter found in stars and lightning.
  2. 5. Melting an ice cube.
  3. 10. Has a wide range of melting points, almost too hard.
  4. 11. Particles here move quickly and freely because of the empty space.
  5. 14. The smallest unit of a compound that retains its properties.
  6. 16. Changing the shape of an object without breaking it.
  7. 19. The ability to do work or cause change.
  8. 20. The process of changing from liquid to solid.
  9. 21. The process by which water is converted to its gaseous form from its liquid form.
  10. 23. The temperature at which a liquid changes into gas.
  11. 24. Are arranged in a regular repeating three-dimensional structure called.
  12. 26. Very strong and hard to break.
  13. 28. What was the fifth state of matter?
  14. 30. A physical change where an object is split into pieces.
  15. 31. It is the smallest particle.
Down
  1. 1. Measures how much a liquid resists flowing freely.
  2. 3. The world around us is made of large numbers of identical and very small particles.
  3. 4. Anything that has mass and occupies space.
  4. 6. Has no definite shape
  5. 7. Burning a sugar cube.
  6. 8. The process of changing from solid to liquid through heat.
  7. 9. It changes the color of the petals of a flower, it also gives boost to the plants.
  8. 12. A process that involves heat and chemical change in food.
  9. 13. The process where gas turns into liquid.
  10. 15. A physical change where an object is divided into parts.
  11. 17. It has no definite shape, it varies in shape.
  12. 18. temperature It is the substance that cannot be liquefied no matter how much pressure is applied.
  13. 22. These have high melting points, they are also non-conductors.
  14. 25. It’s the force with the weakest among the types that hold solids together.
  15. 27. It measures heat energy in a substance.
  16. 29. A chemical change that produces heat, light, and new substances.