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