Across
- 1. - Organic molecule that stores and releases chemical energy for use in body cells.
- 4. energy is stored energy, that is, inactive energy that has the potential, or capability, to do work but is not presently doing so.
- 5. bond - Bond joining the amine group of one amino acid to the acid carboxyl group of a second amino acid with the loss of a water molecule.
- 8. Process of substances combining with oxygen or the removal of hydrogen.
- 9. acid - Class of organic molecules that includes DNA and RNA.
- 11. – composition is dissimilar in different areas of the mixture.
- 12. - One of a limited number of unique varieties of matter that composes substances of all kinds.
- 13. - Particle consisting of two or more atoms joined together by chemical bonds.
- 15. substance present in the greatest amount is called the solvent
- 16. Energy - The energy directly involved in moving matter; e.g., in bicycle riding, the legs provide the mechanical energy that moves the pedals.
- 19. – the study of the chemical composition and reactions of living matter.
- 20. ionic bond (i-on9ik) is a chemical bond between atoms formed by the transfer of one or more electrons from one atom to the other.
- 23. Anything that occupies space and has mass.
- 24. – A reactant on which an enzyme acts to cause a chemical action to proceed
- 25. - Isotope that exhibits radioactive behaviour.
- 29. - Nucleic acid that contains ribose and the bases A, G, C, and U. Carries out DNA’s instructions for protein synthesis.
- 31. Energy - Energy formed by the movement of charged particles across cell membranes.
- 33. molecules – Non-symmetrical molecules that contain electrically unbalanced atoms.
- 34. : Smallest particle of an elemental substance that exhibits the properties of that element; composed of protons, neutrons, and electrons
- 35. bond - An energy relationship holding atoms together; involves the interaction of electrons.
- 36. energy is energy in action.
- 39. - A way to express the concentration of a solution; moles per litre of solution.
- 41. reaction - A chemical reaction in which larger, more complex atoms or molecules are formed from simpler ones.
- 43. - Control centre of a cell that contains genetic material and clusters of nerve cell bodies in the CN.
- 46. reaction - Process in which molecules are formed, changed, or broken down.
- 47. - Suspensions are heterogeneous mixtures with large, often visible solutes that tend to settle out.
Down
- 1. Energy – is the amount of energy required to push a reactant to the level necessary for action
- 2. – A nucleic acid found in all living cells; it carries the organism’s hereditary information. DNA replication Process that occurs before cell division; ensures that all daughter cells have identical genes.
- 3. number - The number of protons in an atom.
- 4. - Subatomic particle that bears a positive charge; located in the atomic nucleus.
- 6. - A protein that acts as a biological catalyst to speed up a chemical reaction.
- 7. means that the mixture has exactly the same composition or makeup throughout
- 10. Energy - Energy stored in the bonds of chemical substances.
- 14. Energy - is energy that travels in waves
- 17. shell - Regions of space that consecutively surround the nucleus of an atom.
- 18. are substances composed of two or more components physically intermixed.
- 21. - Displacement reaction in which mixing an acid and a base forms water and a salt.
- 22. Different atomic forms of the same element, which vary only in the number of neutrons they contain; the heavier species tend to be radioactive.
- 26. acids - Organic compound containing nitrogen, car bon, hydrogen, and oxygen; building block of protein.
- 27. present in smaller amounts are called solutes
- 28. - A substance of high molecular weight with long, chain-like molecules consisting of many similar (repeated) units.
- 30. weight –
- 32. - A mole of any element or compound is equal to its atomic weight or its molecular weight measured in grams.
- 34. - A substance that releases hydrogen ions when in solution; a proton donor.
- 37. molecule - Electrically balanced molecules
- 38. number - Sum of the number of protons and neutrons in the nucleus of an atom
- 40. The capacity to do work, or to put matter into motion.
- 42. - Organic compound composed of carbon, oxygen, hydrogen, and nitrogen; types include enzymes, structural components.
- 44. - Group of chemical substances including certain hormones and cholesterol; they are fat soluble and contain little oxygen.
- 45. - A substance capable of binding with hydrogen ions; a proton acceptor.