Across
- 2. The height of a wave from the origin to a crest or from the origin to a trough
- 6. Consists of an element’s symbol, representing the atomic nucleus and inner level electrons, that is surrounded by dots, representing the atom’s valence electrons
- 7. A type of group B element that is contained in the d-block of the periodic table and, with some exceptions, is characterized by a filled outermost s orbital of energy level n, and filled or partially filled d orbitals of energy level n-1
- 8. Groups of elements in the modern periodic table that are designated with a B and are further divided into transition metals and inner transition metals
- 9. negatively charged particles that are part of all forms of matter
- 10. States that atoms lose, gain, or share electrons in order to acquire a full set of eight valence electrons
- 13. All matter is composed of extremely small particles called atoms
- 14. A subatomic particle in an atoms nucleus that has a positive charge of 1+
- 17. An element that is solid at room temperature, a good conductor of heat and electricity, and generally is shiny
- 18. Group 2A elements in the modern periodic table
- 19. located along the bottom of the periodic table
- 28. Groups of elements in the modern periodic table that are designated with an A and possess a wide range of chemical and physical properties
- 30. A horizontal row of elements in the modern periodic table
- 31. An ion that has a negative charge
- 32. Highly reactive group 7A elements
- 33. Elements that are generally gases or dull, brittle solids that are poor conductors of heat and electricity
- 35. States that equal volumes of gases at the same temperature and pressure contain equal numbers of particles
- 37. Group 1A elements, except for hydrogen, that are on the left side of the modern periodic table
- 38. A particle with two protons and two neutrons, with a 2+ charge
- 39. The positively charged protons and neutral neutrons contained in an atom’s densely packed nucleus.
- 41. The minimum amount of energy that can be gained or lost by an atom
- 42. Ray of radiation that originated from the cathode to the anode within the tube
- 43. Radiation consisting of fast moving electrons
- 44. The process in which some substances spontaneously emit radiation
- 45. The rays and particles-alpha and beta particles and gamma rays-that are emitted by radioactive material
Down
- 1. The boxes that are arranged in order of increasing atomic number into a series of columns
- 2. The weighted average mass of the isotopes of that element
- 3. An element, such as silicon or germanium, that has physical and chemical properties of both metals and nonmetals
- 4. The shortest distance between equivalent points on a continuous wave; is usually expressed in meters, centimeters, or nanometers.
- 5. A three-dimensional region around the nucleus of an atom that describes an electron’s probable location
- 6. Includes all forms of electromagnetic radiation, with the only differences in the types of radiation being their frequencies and wavelengths
- 9. relative ability of its atoms to attract electrons in a chemical bond
- 11. An extremely unreactive group 8A element
- 12. A neutral subatomic particle in an atom’s nucleus that has a mass nearly equal to that of a proton
- 14. States that when the elements are arranged by increasing atomic number, there is a periodic repetition of their chemical and physical properties
- 15. The arrangement of electrons in an atom, which is prescribed by three rules-the aufbau principle, the Pauli exclusion principle, and Hund’s rule
- 16. High-energy radiation that has no electrical charge and no mass, is not deflected by electric or magnetic fields, usually accompanies alpha and beta radiation, and accounts for most of the energy lost during radioactive decay
- 20. A reaction that involves a change in the nucleus of an atom
- 21. A spontaneous process in which the unstable nuclei lose energy by emitting radiation
- 22. The number 6.022x10^23, which is the number representative particles in a mole
- 23. The energy required ti remove an electron from a gaseous atom; generally increases in moving from left-to-right across a period and decreases in moving down a group
- 24. an atom or a bonded group of atoms that has a positive or negative charge
- 25. The number after an element’s name, representing the sum of its protons and neutrons
- 26. Radiation that is made up of alpha particles
- 27. Radiation that is deflected toward the positively charged plate
- 29. A type of equation that shows the atomic number and mass number of the particles involved
- 34. The electrons in an atoms outermost orbitals; determine the chemical properties of an element
- 36. Atoms of the same element with the same number of protons but different numbers of neutrons
- 37. The number of protons in an atom
- 40. A particle of electromagnetic radiation with no mass that carries a quantum of energy