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 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