Unit 1: Intro to Chemistry
Across
- 2. a proposed explanation for observations and laws
- 4. the science that seeks to understand the behavior of matter by studying what atoms and molecules do
- 6. the non-place-holding digits in a reported measurement; they represent the precision of a measured quantity
- 8. one part of a number expressed in scientific notation
- 9. a measure of the quantity of matter within an object.
- 10. a unit of volume equal to 1.057 quarts
- 13. a law stating that in a chemical reaction, matter is neither created nor destroyed
- 15. a theory stating that all matter is composed of tiny particles called atoms
- 17. previously agreed-on quantities used to report experimental measurements
- 19. a fundamental property of materials that relates mass and volume and differs from one substance to another
- 21. often the first step in the scientific method; must measure or describe something about the physical world
- 24. one part of a number expressed in scientific notation
- 25. the way that scientists learn about the natural world
- 28. a system used to write very big or very small numbers, often containing many zeros, more compactly and precisely
- 29. the unit system commonly used throughout most of the world
Down
- 1. a measure of space
- 3. a theory or law before it has become well established
- 5. the SI standard unit of length
- 7. the standard set of units for science measurements, based on the metric system
- 11. a visual outline of the solution to a problem
- 12. the most convenient system of units for science measurement, based on the metric system
- 14. the SI standard unit of time
- 16. a unit system commonly used in the United States
- 18. a statement that summarizes past observations and predicts future ones
- 20. a number that represents the number of times a term is multiplied by itself
- 22. prefixes used by the SI system with the standard units
- 23. the SI standard unit of mass
- 26. a procedure that attempts to measure observable predictions to test a theory or law
- 27. a factor used to convert between two separate units