Chapter 1 Vocab

2. How close multiple measurements are to each other
4. type of mixture that has a uniform composition
5. How close a measurement is to the true or accepted value
8. type of mixture that does not have a uniform composition
12. descritive measurements
13. the amount of matter in an object (How much “stuff”)
14. a type of observation
16. Anything that can do work or produce heat.
19. Properties that can be measured or observed without changing the identity (or composition) of a substance.
21. The study of matter and the changes it undergoes.
22. observation made with a measuring instrument and includes both a number and a unit

1. In any chemical or physical change, matter cannot be created or destroyed.
3. formed when elements chemically combine: H2O, CO2, NO2
6. One or more substances react to form new substances with different chemical and physical properties
7. Properties that indicate how a substance reacts with other substances
9. Have uniform and definite composition
10. Anything that has mass and volume (EVERYTHING!)
11. Two or more pure substances physically mixed together.
15. Changes in appearance without changing composition
17. A method used to convert units.
18. The force of gravity acting on an object’s mass.
20. found on the Periodic Table (approx. 118)