Across
- 1. 2 elements that form a compound.
- 8. a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
- 11. 2 or more atoms chemically combined.
- 13. each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.
- 14. the energy stored in the bonds of a compound.
- 17. the statement that when atoms combine to form molecules they generally each lose, gain, or share valence electrons.
- 18. describes how a substances changes into a new substance.
- 19. an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. They are electrical semiconductors.
- 21. a variable whose variation does not depend on that of another.
- 23. ionic species having a negative charge.
- 24. are regions of space around the nucleus of an atom where an electron is likely to be found.
- 26. an element, feature, or factor that is liable to vary or change.
- 31. trait or characteristic.
- 32. name given to a horizontal row of the periodic table.
- 39. simplest form of the species.
- 40. A compound is a substance made up of a definite proportion of two or more elements.
- 41. 1 compound that forms 2 elements.
- 43. a vertical column in the Periodic Table.
- 45. hydrocarbon and oxygen form water and carbon dioxide.
- 47. a change that does not affect the identity of the substance.
- 49. how compact an object is.
- 53. shows the reactants and products using symbols.
- 54. average mass of all atoms.
- 56. a variable whose value depends on that of another.
- 57. an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
- 58. the substances before the change, written on the left side of the arrow.
- 60. location of protons and neutrons.
Down
- 2. particles with in the atom protons, neutrons, and electrons.
- 3. reaction 1 element and 1 compound form a new element and new compound.
- 4. a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
- 5. rounded atomic mass.
- 6. A chemical bond formed between two ions with opposite charges.
- 7. 2 or more atoms/compounds physically combined.
- 9. an element or substance that is not a metal.
- 10. the act of trying, testing, or putting to the proof.
- 12. the parts of the mixture look the same.
- 15. a positively charged ion, i.e., one that would be attracted to the cathode in electrolysis
- 16. producing the desired result; effective.
- 18. a variable that is used to regulate the flow of control, or order of execution, generally the number of times a loop will execute.
- 20. a particle with no electric charge.
- 22. equal number of atoms both sides of the arrow.
- 25. parts of a mixture look different or distinguishable.
- 27. identifies the element.
- 28. same ratio of atoms no matter the size of the substance.
- 29. lasting attraction between atoms that enables the formation of chemical compounds.
- 30. can be observed without channeling the substance.
- 33. releases energy in the form of heat.
- 34. a change that creates a new substance.
- 35. the elements have a repeating pattern that alow them to be placed in groups and periods.
- 36. obsorbs energy in the form of heat.
- 37. A chemical bond formed by the sharing of one or more electrons.
- 38. a chemical change that produces a new substance.
- 42. a proposition assumed as a premise in an argument.
- 44. reaction 2 compounds form 2 new compounds.
- 46. make a reaction go faster but does not get used up in a reaction.
- 48. a molecular ion, is a charged chemical species.
- 50. the substance after the change has occurred, written on the right side of the arrow.
- 51. the number in front of the variable.
- 52. not changing or varying.
- 55. a vertical column in the Periodic Table.
- 59. smallest form of an element that consists of a nucleus, protons, neutrons.