Across
- 4. different forms that matter can be found in
- 6. properties that are measurable and can be observed, can be determined without changing the chemical properties of an object (color, hardness, area, length, strength, temperature, state of matter)
- 9. equals the number of protons in an atom
- 10. neutrally charged subatomic particles found in the nucleus of an atom
- 12. Atomic mass unit.
- 18. equals the number of protons plus electrons in an atom
- 20. the transfer of energy through direct contact of objects.
- 21. amount of space that an object or substance occupies (physical property)
- 23. nergy Energy that is generated by movement within an atom
- 27. chemical property of how easily a substance will set on fire
- 28. anything that has mass and occupies space
- 29. pure chemical substance that is made up of two or more different elements
- 33. table arranging all the known elements into groups with common properties. This arrangement also demonstrates trends based on those properties.
- 34. made of two or more substances and you can differentiate between the substances (sand)
- 35. negatively charged subatomic particles found in the electron cloud of an atom
Down
- 1. properties that can be measured only by chemically changing an object (fire)
- 2. matter of any form that cannot be broken down into separate elements by physical means but can be broken down using chemical changes
- 3. no definite shape (take the shape of the container) and no definite volume (steam)
- 5. Energy energy that is generated and measured by heat (kinetic energy of an atom)
- 7. gas that is charged and conducts electricity easily (stars, neon lights, lightning). Plasma is different from the other states of matter in that it is a high-energy state of matter.
- 8. chemical property of the capacity of an atom or molecule to go through a chemical reaction with another atom or molecule
- 11. energy that is transferred by waves of the electromagnetic spectrum, such as sunlight
- 13. physical property that describes the temperature at which a liquid will become a gas
- 14. smallest unit of matter that defines the chemical reaction
- 15. made of two or more substances that are not combined chemically
- 16. physical property that describes how tightly matter is put together
- 17. made of two or more substances and you cannot differentiate between the substances (salt, water)
- 19. the transfer of energy through the movement of a liquid.
- 22. physical property that describes the temperature at which a solid will become a liquid
- 24. positively charged subatomic particles found in the nucleus of an atom
- 25. electrons found in the outermost shell and involved in forming molecules
- 26. made of two or more atoms joined together chemically; can be the same element (Oxygen) or different elements (Water)
- 30. definite shape and volume which cannot be easily changed (ice)
- 31. definite volume but no fixed shape (water)
- 32. pure chemical substances that are made up of one type of atom