First Six Weeks Vocabulary

1. First Six Weeks Vocabulary List 1

2. Matter • Anything that has mass and takes up space • Can be divided into three categories: • Solid • Liquid • Gas

3. Solid • Matter that has a definite shape and definite volume

4. Liquid • Matter that has a definite volume but no definite shape

5. Gas • Matter that has no definite shape or volume

6. Reacts • How something acts or behaves; responds • Example: You give a dog a bone every time he sits. Every time you ask him to sit, he thinks you are going to give him a bone.

7. Response • Answer • Example: You responded correctly on the test on every question, so you got a 100!

8. Evaporation • Liquid changes into a gas by adding heat; particles escape from a non-boiling liquid and become a gas

9. Condensation • Gas changing to a liquid by taking away/removing heat

10. Melting • A solid changes to liquid by adding heat Salvador Dali’s “Melting Clocks”

11. Boiling • A liquid changes to gas by adding heat

12. Freezing • A liquid changes into a solid by taking away/removing heat

13. Melting point of ice • 0 degrees Celsius

14. Boiling point of pure water • 100 degrees Celsius

15. Freezing point of pure water • 0 degrees Celsius

16. Melting point (of anything) • Temperature at which it changes from a solid to a liquid • Example: The melting point of gold is 1063.43 degrees Celsius

17. Boiling point (of anything) • Temperature at which it changes from liquid to gas • Example: The boiling point of sulfuric acid is 327 degrees Celsius

18. Freezing Point • The temperature at which a liquid changes to a solid • The freezing point of vinegar is -2 degrees Celsius

19. Mass • Amount of matter in an object; measured with a balance

20. Weight • Measure of the pull of gravity on an object; amount of matter in an object’s volume • Ex: Astronauts weigh more on Earth than on the Moon because the Moon has less gravity than Earth.

21. Volume • Amount of space that an object takes up

22. Density • Concentration of matter in an object; amount of matter in an object’s volume In this picture, the solid is denser than the liquid, and the liquid is denser than the gas.

23. Safety • Precaution taken to be free from danger

24. Precaution • Things you do to be careful/safe

25. Fray • Torn, coming apart

26. Hazard • Dangerous thing that could happen or has happened

27. Wafting • A safe way to smell in science lab; put what you are trying to smell about six inches away from nose and gently push air with your other hand toward your nose

28. Fire triangle • Fuel, oxygen, and heat; what is needed to create and sustain fire

29. Vinegar • Mild acid that causes some powders to changes • Strong smell • Clear liquid • Smelled it in our wafting lab • Smells like pickles

30. Solubility • Ability to be dissolved • Sugar can be dissolved in water

31. Displaces • Takes the place of

32. Mixture • Two or more things put together; two or more different kinds of matter where each keeps its own physical properties

33. Solution • Type of mixture where particles are mixed evenly; cannot be easily separated

34. Dissolve • Mix evenly with water • NOT disappeared

35. Substances • Materials

36. Goggles, Aprons, and Gloves • Goggles – safety gear for the eyes • Aprons- safety gear for the torso • Gloves – safety gear for the hands

37. Hand Lens • magnifying glass to be held in the hand

38. Triple Beam Balance • an instrument used for measuring mass

39. Graduate Cylinder • container with a scale used for measuring liquids

40. Eyedropper • short glass/plastic tube fitted with a rubber bulb and used to measure liquids by drops

41. Physical Properties • characteristics that can be observed or measured

42. Observations • What we see

43. Measure • use a tool to find exact physical characteristics