Across
- 1. The ability of a material to bounce back after being disturbed
- 3. A process that separates the substances in a solution based on their boiling points
- 5. a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself
- 11. the ability of one substance to dissolve in another at a given temperature and pressure
- 12. a physical property that depends on the amount of matter present
- 13. the basic unit of a chemical element.
- 14. Another word for groups, columns of elements on the periodic table
- 15. the energy change that occurs when an electron is acquired by a neutral atom
- 16. A combination of two or more substances that are not chemically combined
- 20. the number of electrons that must be added to or removed from an atom in a combined state to convert the atom into the elemental form
- 21. a measure of how much the volume of matter decreases under pressure
- 24. the number of cycles of an event per unit of time; one Hertz means one cycle per second
- 30. a characteristic of a pure substance that can be observed or measured without changing the substance's chemical identity
- 31. The sensation of color that is produced when wavelengths of light are reflected back to the viewer after all other wavelengths have been subtracted and/or absorbed.
- 35. A mixture that forms when one substance dissolves another.
- 37. a measure of the size of an atom of an element from the nucleus to the outer electrons
- 38. the length between successive peaks or troughs of a wave
- 39. the elements in Group 18 or 8A of the periodic table, stable gases
- 40. a constant value that relates the energy of a photon of light to its frequency
- 42. the ability of a substance to be hammered or beaten into thin sheets
- 43. Contains nonmetals, 7 valence electrons in it's outermost energy level. Very reactive
- 44. substance formed by the chemical combination of two or more elements in definite proportions
- 45. a change that alters a substance without changing its chemical composition or its identity
- 46. A single kind of matter that is pure and has a specific set of properties.
- 47. A change directly from the solid to the gaseous state without becoming liquid
- 48. A characteristic of a pure substance that describes how it interacts with other substances
- 49. anything that has mass and takes up space
Down
- 2. a change in the chemical composition and identity of the substance
- 4. the superscript indicates the mass number and the subscript indicates the atomic number
- 6. metallic elements in group 2 of the periodic table which are harder than the alkali metals and are also less reactive
- 7. the variety of frequencies of electromagnetic radiation (light) seen through a spectroscope that are emitted by electrons as they transition from higher to lower energy levels; unique for each element
- 8. tendency of a substance to undergo chemical changes
- 9. A process that separates materials based on the size of their particles.
- 10. the arrangement of and relations between the parts or elements of something complex.
- 12. negatively charged subatomic particles
- 17. Groups 3-12, 1-2 electrons in the outer energy level, less reactive than alkali-earth metals, shiny, good conductor of thermal energy and electrical current, high density
- 18. the ability of a substance to be drawn, pulled, or extruded through a small opening to produce a wire
- 19. A liquid's resistance to flowing
- 22. positively charged subatomic particles
- 23. particles found within an atom: protons, neutrons, electrons
- 25. The change of a substance from a liquid to a gas
- 26. A substance that cannot be broken down into simpler substances
- 27. the sum of the number of neutrons and protons in an atomic nucleus
- 28. a group of elements that have similar chemical properties
- 29. those electrons involved in the formation of chemical bonds
- 32. a physical property that does not depend on the amount of substance present
- 33. Center of an atom
- 34. The change of state from a liquid to a gas
- 36. A particle of electromagnetic radiation with no mass that carries a quantum of energy
- 37. Group 1, 1 electron in outer level, very reactive, soft, silver, shiny, low density; Lithium, Sodium, Potassium, Rubidium, Cesium, Francium
- 41. the number of protons in the nucleus of an atom