Chemistry Review
Across
- 2. The elements are displayed in order by their name in the ___ table
- 4. Atoms with the same number of protons but different number of neutrons
- 6. The first element on the periodic table
- 7. Speed of light is _x10^8 m/s
- 13. Every atom’s nucleus is orbitted by ____
- 14. one/second
- 16. In the equation λν = c, what does stand for?
- 21. What is the atomic number of Helium?
- 25. What did Rutherford’s Gold foil discover?
- 27. The number written as a right superscript is the ___ charge
- 28. Sub-Atomic particles with a zero charge
- 29. What does c stand for in the equation λν = c
- 31. Sub-atomic particles with a +1 charge
- 32. When every atom is neutral, they are also ____
- 34. When an atom has an uneven amount of protons and/or electrons it is _____
- 37. The equation to find the number of neutrons is Mass ____ Protons
- 38. Sub-atomic particles with a -1 charge
- 39. Each element has it’s own atomic _____
- 41. When an atom absorbs energy, the electrons move from their ground state to an __ state
- 42. In the formula E=HV, what does the V stand for?
- 43. What does the E stand for in the equation E=HV
Down
- 1. What unit is wavelength measured in?
- 3. The Gold Foil Experiment calculates the ___ of the Nucleus of an Atom
- 5. A unit of energy
- 8. Atoms with different numbers of protons are different _____
- 9. Light at a certain frequency causes metals to ___ their electrons
- 10. Atoms with the same number of electrons as protons are neutral but atoms with either more or fewer electrons than this are ____
- 11. The number of protons is referred to as the ___ number
- 12. minimum amount of energy that can be gained or lost by an atom
- 15. What color of light has a wavelength of 700nm?
- 17. When an atom emits energy, the electrons move from an exited state to their ___ state
- 18. The relationship between frequency and wavelength are ____ proportional
- 19. In the formula E=HV, H stands for ___’s Constant
- 20. Atoms with a negative charge have more electrons than protons are called
- 22. Atoms with a positive charge have fewer electrons than protons are called
- 23. Which color of light has a wavelength of 400nm?
- 24. When a substance is heated in a flame, the atoms ___ energy from the flame
- 26. What is everything made up of?
- 29. An atom’s ___ is based on 3 numbers, protons, electrons, and neutrons
- 30. Atoms are mostly made out of ___ space
- 31. The elements are ordered by their atomic numbers on the ___ table
- 33. In a neutral atom, the number of electrons are equal to the number of protons
- 35. The number of protons plus the number of neutrons is the ___ of an atom
- 36. The Atomic _____ is also represented by the letter Z
- 40. The atomic mass of protons is about ___ amu