Transcript 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 ► I am the type of molecule that stores genetic information in living things ► Nucleic acid ► I am an attraction between a slightly positive hydrogen atom and a slightly negative atom, such as oxygen or nitrogen ► Hydrogen bond ► I am a catalyst for a chemical reaction in living things; in almost all cases I am a protein ► Enzyme ► Chemical bonds hold me together; I always contain atoms of more than one element ► Compound ► I am a carbon chain found in many lipids; I can be either saturated or unsaturated ► Fatty acid ► I have a positive charge if I lose an electron; I have a negative charge if I gain an electron ► Ion ► I am a reactant an enzyme acts on; I bind to an enzyme’s active site ► Substrate ► I am made of amino acids; there are many different types of me with many different functions in living things. ► Protein ► I am a type of bond that involves sharing of an electron pair; I hold together a water molecule. ► Covalent bond ► I am an attraction between different types of molecules; I am the reason why water clings to glass. ► Adhesion ► I contain carbon, hydrogen, and oxygen; Sometimes I am found in the cell walls of plants ► Carbohydrate (or polysaccharide, or cellulose) ► 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 ► I am always found in organic molecules. ► Carbon ► 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 ► ► ► ► ► ► ► ► Cohesion/Adhesion Different Monomer/Polymer Different Enzyme/Protein Same Endothermic/Exothermic Different ► ► ► ► Substrate/Reactant Same Compound/Element Different 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) Lipid: (a) a car’s headlights (b) a car’s gas tank ► (b) ► Activation energy: (a) starting a lawnmower with the pull cord (b) eating sugary foods ► (a) ► Solute: (a) getting lost in a crowd (b) answering a math problem ► (a) ► 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) ► ►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)