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What Am I?

What Am I?. I am a type of mixture; I am formed when one substance, such as water, dissolves other substances. Solution. I am a chemical reaction that absorbs more energy than I release; my products have a higher bond energy than my reactants Endothermic.

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What Am I?

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  1. What Am I?

  2. I am a type of mixture; I am formed when one substance, such as water, dissolves other substances. • Solution

  3. I am a chemical reaction that absorbs more energy than I release; my products have a higher bond energy than my reactants • Endothermic

  4. I am the type of molecule that stores genetic information in living things • Nucleic acid

  5. I am an attraction between a slightly positive hydrogen atom and a slightly negative atom, such as oxygen or nitrogen • Hydrogen bond

  6. I am a catalyst for a chemical reaction in living things; in almost all cases I am a protein • Enzyme

  7. Chemical bonds hold me together; I always contain atoms of more than one element • Compound

  8. I am a carbon chain found in many lipids; I can be either saturated or unsaturated • Fatty acid

  9. I have a positive charge if I lose an electron; I have a negative charge if I gain an electron • Ion

  10. I am a reactant an enzyme acts on; I bind to an enzyme’s active site • Substrate

  11. I am made of amino acids; there are many different types of me with many different functions in living things. • Protein

  12. I am a type of bond that involves sharing of an electron pair; I hold together a water molecule. • Covalent bond

  13. I am an attraction between different types of molecules; I am the reason why water clings to glass. • Adhesion

  14. I contain carbon, hydrogen, and oxygen; Sometimes I am found in the cell walls of plants • Carbohydrate (or polysaccharide, or cellulose)

  15. I am the amount of energy that is needed for a chemical reaction to start; after I am added, the reaction can take place on its own • Activation energy

  16. I am always found in organic molecules. • Carbon

  17. Same or Different? Do the pair of words describe the same thing or different things? • Atom/Element • Same • Solvent/Solute • Different • Acid/Base • Different • Catalyst/Enzyme • Same

  18. Cohesion/Adhesion • Different • Monomer/Polymer • Different • Enzyme/Protein • Same • Endothermic/Exothermic • Different

  19. Substrate/Reactant • Same • Compound/Element • Different

  20. Situational Vocabulary: Which choice most closely relates to the vocabulary word? • Amino Acid: (a) lemon juice in iced tea (b) one of many beads on a string • (b) • Atom: (a) unicellular organism (b) multicellular organism • (a) • Covalent bond: (a) linking hands in a human chain (b) passing a basketball • (a)

  21. Lipid: (a) a car’s headlights (b) a car’s gas tank • (b) • Activation energy: (a) starting a lawn-mower with the pull cord (b) eating sugary foods • (a) • Solute: (a) getting lost in a crowd (b) answering a math problem • (a)

  22. Water molecule: (a) a ring (b) head and ears of a cartoon mouse • (b) • Activation energy: (a) a mountain (b) long, capital letter E • (a) • Triglyceride: (a) long, capital letter E (b) jigsaw puzzle pieces • (a)

  23. pH scale: (a) letters of the alphabet (b) meterstick • (b) • Starch: (a) savings account in a bank (b) loose change in your pocket • (a) • Amino acids: (a) letters of the alphabet (b) magnets • (a)

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