Across
- 1. branch of science that deals with the identification of the substances of which matter is composed
- 4. An item of laboratory equipment which consists of a metal pole with a solid, firm base, used to hold or clamp laboratory equipment
- 5. used to take and handle small quantities of solid chemicals.
- 6. He said thatAll matter is composed of small, indivisible particles
- 7. This element is 78% of the earth's atmosphere
- 10. Is a measure of how close the value of a measurement agrees with a known or accepted value
- 12. It is the collection of techniques that allows exact laboratory determination of the composition of a given sample or a material.
- 13. This element can be used to fill up balloons
- 15. Helium,Neon, and Krypton belong in this group of elements.
- 19. used when fingers are too large to grasp small objects or when many objects need to be held at one time while the hands are used to perform a task.
- 21. Said that all elements have specific atomic weights
- 22. Used for heating in the lab
- 23. Mass over volume is equals to
- 25. Also known as centigrade
- 26. Used to measure volumes
- 28. Attaches to ring stand; supports flasks test tubes
- 29. One of who invented the periodic laws
- 31. To measure the length of an object
- 34. It happens when a liquid substance becomes a gas.
- 36. identification of the constituents, e.g., elements or functional groups, present in a substance.
- 38. He discovered the structure of the atom
- 40. Changes that alter the state or appearance of matter without altering the composition
- 41. This state of matter doesn't have enough freedom to escape and expand to fill the container.
- 42. chemical element with symbol C and atomic number 6
- 44. This mixture has uniform composition throughout.
- 47. These substances cannot be broken down to simpler substances
- 48. These substances cannot be decomposed.
- 49. Fundamental unit of length in the metric system
- 51. Is the determination of the reproducibility of a measurement
- 52. used to safely move a piece of equipment called a crucible
- 53. It is energy at rest
- 54. used in chemistry as a surface to evaporate a liquid, to hold solids while being weighed, or as a cover for a beaker.
Down
- 2. Holds test tubes
- 3. Anything that occupies space and has weight
- 5. Happens when a solid becomes a gas.
- 8. the determination of the absolute or relative abundance of one, several or all particular substance(s) present in a sample.
- 9. This element helps clean pool waters
- 11. number It is equal to the number of protons in an atom's nucleus
- 14. Used to prepare ingredients by crushing and grinding them
- 16. tongs For moving hot beakers
- 17. Systematic way of solving scientific problems logically
- 18. This element is the most abundant and cheapest of all the metals.
- 20. Changes that alter the composition of the matter
- 24. a tube or pipe that is wide at the top and narrow at the bottom, used for guiding liquid or powder into a small opening.
- 27. used for the evaporation of solutions and supernatant liquids, and sometimes to their melting point.
- 30. Used to transfer liquids
- 32. This part of the burner is responsible for the control of gas supply.
- 33. The fundamental unit of temperature in the english system
- 35. This state of matter has particles packed close together and are fixed in position.
- 37. Happens when a liquid substance becomes solid.
- 39. This element is used as a coin in the us
- 40. This laboratory apparatus is used for measuring and transferring liquids from one container to another.
- 43. This element is a radioactive gas
- 44. Mixture that does not have uniform composition throughout.
- 45. This element is needed for you to live
- 46. Container for reactions
- 49. a property of a physical body which determines the strength of its mutual gravitational attraction to other bodies
- 50. This element is the best conductor of heat and electricity