science

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Across
  1. 2. The energy an object possesses by virtue of its motion
  2. 5. A reaction in which different elements are fused together to blend into a larger element, releasing large amounts of energy.
  3. 7. - zero - The theoretical lowest temperature possible at which all molecular motion ceases
  4. 8. process in which atoms and molecules recombine by forming or breaking chemical bonds.
  5. 12. Occurs when a channel assists molecules in moving through a membrane.
  6. 15. he state of matter characterized by its non-condensed nature and ability to flow
  7. 19. - A change that allows an organism to function better in a particular environment.
  8. 22. The natural force that attracts a body toward the center of the Earth, or toward another physical body having mass.
  9. 23. A chemical bond characterized by electrostatic attraction between ions of opposite charge.
  10. 24. - The change in an object's velocity over time, measured in distance per unit time per unit time
  11. 25. The act of fastening two atoms together.
  12. 27. - Take in or soak up
  13. 29. A fundamental property of matter which is a numerical measure of the inertia of an object or the amount of matter that an object contains.
  14. 34. - An organism or cell that requires oxygen to carry out its metabolic processes; a process that requires oxygen.
  15. 36. The rate at which a vibration occurs that constitutes a wave, either in a material or in an electromagnetic field, usually measured in hertz
  16. 41. A formal two-word name given to each species, based on the combination of a genus name and a species name.
  17. 44. An atom or molecule that has acquired an electrical charge by either gaining or losing electrons.
  18. 45. The conditions that surround and affect an organism.
  19. 46. he time required for half of the original amount of a substance to undergo a process
  20. 47. Magnitude is a number assigned to a quantity and refers to the size or extent of something.
  21. 48. A measure of the total internal energy of a substance that can be increased or decreased when objects with different temperatures are placed into contact.
  22. 50. A form of electromagnetic radiation
  23. 51. The output of electromagnetic energy from the sun as measured on Earth.
  24. 52. Deoxyribonucleic acid. A double-stranded nucleic acid containing the sugar 2-deoxy-D-ribose.
  25. 53. A tiny, dense positively charged mass at the heart of an atom.
  26. 55. A sub-atomic particle with no charge and a mass of 1.675 × 10-27 kg.
  27. 57. The basic structural unit of all living things.
  28. 58. An abstract property defined as the capacity to do work.
  29. 59. - table a tabular display of the chemical elements
  30. 60. - The average mass of an atom of an element, usually expressed in atomic mass units.
Down
  1. 1. A subatomic particle with a negative charge of 1.60 × 10-19 coulombs and a mass of 9.11 × 10-31 kg
  2. 3. Generally defined as neither one thing nor another.
  3. 4. A chemical compound held together by ionic bonds Atoms of the same element with different numbers of neutrons in their atomic nucleus.
  4. 6. One of fewer than 118 pure chemical substances
  5. 9. The movement of atoms or molecules from one part of a medium to another caused by their random thermal motion
  6. 10. Not originating from a living organism; not a compound that contains hydrocarbons.
  7. 11. The escape of a gas through a hole.
  8. 12. Able to flow because the intermolecular forces allow the molecules to move around in relation to one another.
  9. 13. A strong dipole-dipole attraction between two or more molecules,
  10. 14. A quantity of electricity.
  11. 16. The substance that makes up physical objects.
  12. 17. A cylinder of ice that contains different layers of ice formed over time.
  13. 18. The combined mass of living or once-living organisms in a given area.
  14. 20. he smallest unit of an element that retains the chemical properties of the element
  15. 21. A negatively charged chemical compound that contains one hydrogen atom and one oxygen atom, written as OH-
  16. 26. A large group of one-celled organisms that are found almost everywhere.
  17. 28. Commonly referred to as burning, a chemical reaction between a fuel (for example wood) and an oxidizing agent (for example oxygen)
  18. 30. involving physical force or motion.
  19. 31. A measure of the compactness of a substance given by the mass per unit volume
  20. 32. Having or representing the Earth as the center, as in the heliocentric concept of the universe
  21. 33. A group of polymers made of repeating units of phosphoric acid and sugar to which nucleotide bases are attached.
  22. 35. The bending or spreading of waves when they meet an obstruction.
  23. 37. Material (usually DNA) that is inherited from a parent and which encodes for a cellular component important for some cellular function.
  24. 38. Compare with Bohr radius and hartree. A system of non-SI units used in quantum chemistry to simplify calculations and mathematical expressions.
  25. 39. - Rain with a pH less than 5.
  26. 40. [noun] Plant fiber; a polymer (molecular chain) of glucose molecules.
  27. 42. Molten rock below the surface of the Earth.
  28. 43. - machines - In general, they can be defined as the simplest mechanisms that use mechanical advantage to multiply force
  29. 49. Forces of attraction or repulsion between objects.
  30. 54. A link between atoms. See ionic bond and covalent bond
  31. 56. See normal distribution.
  32. 58. Change in the gene pool of a population from generation to generation by such processes as mutation, natural selection, and genetic drift.