Science crossword

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Across
  1. 2. - a substance that is made from two or more simpler substances that are chemically combined in a specific ratio
  2. 6. mixture - a type of mixture in which the parts of the mixture are noticeably different from one another
  3. 7. - a heterogeneous mixture that separates into layers over time
  4. 9. - the state of matter in that has a definite volume but not a definite shape
  5. 10. - the smallest particle of an element
  6. 13. Point - the temperature at which a substance changes from solid to liquid
  7. 15. - a change in which a system absorbs energy from its surroundings
  8. 17. change - a reversible physical change that occurs when a substance changes from one state of matter to another
  9. 20. - a change in which a system releases energy to its surroundings
  10. 22. - a process that separates materials based on the size of their particles
  11. 23. - the phase change in which a gas changes directly into a solid without first changing into a liquid
  12. 24. - the process that changes a substance from a liquid to a gas at temperatures below the substance’s boiling point
  13. 25. - a material’s ability to allow heat or electric charges to flow
  14. 26. - a material’s ability to burn in the presence of oxygen
  15. 27. - the phase change in which a substance changes from a liquid into a gas or vapor
  16. 29. - the state of matter that has a definite shape and definite volume
Down
  1. 1. - a homogeneous mixture that is transparent and forms when substances dissolve
  2. 3. change - a change that occurs when some properties of a material change, but the substances in the material stay the same
  3. 4. - the phase change in which a substance changes from a solid directly to a gas without changing to a liquid first
  4. 5. - a substance that cannot be broken down into simpler substances
  5. 8. - the phase change from a gas to a liquid
  6. 11. - the ability of a solid to be hammered without shattering
  7. 12. Point - the temperature at which a substance boils (changes from a liquid to a gas)
  8. 14. mixture - a type of mixture in which the substances are evenly distributed and it looks like a single substance
  9. 16. property - the ability to produce a change in the composition of matter
  10. 18. Substance - matter that always has exactly the same composition; an element or compound
  11. 19. - the state of matter that has neither a definite shape nor a definite volume
  12. 21. change - change that occurs when a substance reacts and forms one or more new substances
  13. 25. - a homogeneous mixture that is opaque
  14. 28. property - any characteristic of a material that can be observed or measured without changing the composition of the substance