Chemistry Matters!

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Across
  1. 2. Physical properties can be observed or measured without changing the composition of matter.
  2. 7. Digits that carry meaning. Critical when reporting scientific data because they give the reader an idea of how well you could actually measure/report your data.
  3. 9. A conclusion reached on the basis of evidence and reasoning.
  4. 11. Information or data that describes color, odor, shape, or some other physical characteristic
  5. 12. Properties that do not depend on the amount of the matter present.
  6. 13. A level of individual particles that make up matter can be observed.
  7. 17. A mixture in which the uneven texture of the material can be detected.
  8. 18. Refers to the closeness of the measurements to the correct accepted value
  9. 22. Pure substances composed of two or more different elements held together by chemical bonds.
  10. 23. The action or process of noticing something or someone carefully or in order to gain information.
  11. 25. A property used to characterize materials in reactions that change their identity.
  12. 26. Very small pieces of solid are spread through a liquid but do not dissolve
Down
  1. 1. Has no definite shape or volume. Can expand to fill the container they are in and can be compressed.
  2. 3. A mixture that consists of two or more substances in the same phase. They are often called solutions.
  3. 4. Have definite volume but take the shape of the container. The particles move just fast enough to overcome some of the attraction between each other.
  4. 5. The way that scientists easily handle very large numbers or very small numbers.
  5. 6. This information is shown numerically. Often used to show data involving temperature, pressure, volume, and quantity of chemical formed.
  6. 8. Composed of one type of atom
  7. 10. This is an intrinsic property that is measured g/mL.
  8. 14. Characteristics of properties observed by unaided human senses.
  9. 15. The smallest particle of an element that retains the characteristic chemical properties of that element.
  10. 16. Expressed as a percentage the difference between an approximate or measured value and an exact or known value.
  11. 19. Properties that do depend on the amount of matter present.
  12. 20. Refers to the closeness of a set of measurements to the correct accepted value of the quantity measured.
  13. 21. Has definite shape and volume. The particles vibrate because they do not move fast enough to vibrate.
  14. 24. A homogeneous mixture composed of only one phase.In such a mixture, this is a substance dissolved in another substance.
  15. 25. A substance in which one substance of microscopically dispersed insoluble particles is suspended throughout another substance.
  16. 27. Forms when temperature of a gas is extremely high and its particles are positively and negatively charged. It conducts electric current and are affected by magnetic fields.