Across
- 5. a particle with a positive charge that is in the nucleus of an atom
- 9. known as a chemical reaction
- 11. one tenth
- 13. a system or series of marks used for measuring or registering
- 14. equal to one hundredth of a meter
- 16. the basic unit of a chemical element.
- 20. denoting compounds which are not organic
- 21. Incredibly small
- 24. a soft silvery-white reactive metal of the alkali metal group.
- 26. the chemical element of atomic number 20, a soft gray metal
- 29. a colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.
- 31. the action of measuring something
- 35. a substance that flows freely but is of constant volume
- 36. a unit of weight in general use equal to 16 oz
- 37. substance whose atoms all have the same number of protons
- 38. a unit of linear measure equal to 3 feet
- 42. a unit of linear measure equal to one twelfth of a foot
- 44. a mathematical formula or a chemical formula
- 45. a homogeneous mixture of two or more substances
- 48. an instrument for measuring and indicating temperature
- 49. the chemical element of atomic number 5
Down
- 1. a colorless, odorless, highly flammable gas
- 2. is a chemical element with the symbol Kr and atomic number 36
- 3. demonstrate a known fact.
- 4. action or process of filtering something
- 6. the chemical element of atomic number 30
- 7. the action of floating in a liquid or gas
- 8. a chemical species that donates electrons, accepts protons, or releases hydroxide (OH-) ions in aqueous solution
- 9. a ductile malleable reddish-brown corrosion-resistant diamagnetic metallic element
- 10. a thing that is composed of two or more separate elements
- 11. degree of consistency measured by the quantity of mass per unit volume
- 12. the chemical element of atomic number 27, a hard silvery-white magnetic metal
- 15. the amount of space that a substance or object occupies
- 17. a compound of a metal with the hydroxide ion OH−
- 18. ionized gas consisting of positive ions and free electrons in proportions resulting in more or less no overall electric charge
- 19. the action of purifying a liquid by a process of heating and cooling.
- 22. a yellow precious metal, the chemical element of atomic number 79
- 23. the branch of science concerned with the chemical and physicochemical processes and substances that occur within living organisms
- 25. a force that can attract (pull closer) or repel
- 27. the branch of science that deals with the identification of the substances of which matter is composed
- 28. denoting a factor of 1012
- 30. extremely small
- 32. a group of atoms bonded together
- 33. a substance made by mixing other substances together
- 34. an atom or molecule with a net electric charge due to the loss or gain of one or more electrons
- 39. a yellow combustible nonmetal
- 40. a toxic, irritant, pale green gas
- 41. the chemical element of atomic number 22
- 43. firm and stable in shape
- 46. one hundredth
- 47. a negatively charged subatomic particle