3.4 Energy & Metabolism I. ________ A. Def- the ability to ______ or _______ matter B. Forms 1. Light, _______, chemical, ________, ___________, etc. II. Changing Matter A. __________ Change 1. occurs when only the ______ or _________ of the matter changes

2. The substances do ____ change into __________substances 3. ex- adding ______ to iced tea B. _________ Change 1. Occurs when a substance changes into a new __________ 2. ex– ______ __________ C. Conservation of _______ 1. _______ is neither created nor ___________ in any change

D. Conservation of_________ 1. Energy is neither created nor destroyed, it changes ______ III. __________Reactions A. __________ 1. the substance that is ________ in a chemical reaction B. _________ 1. the new ___________ that is formed

C. ___________Energy 1. The minimum _____energy that colliding particles need to start a __________reaction D. ___________ 1. Chemical reactions can only occur when the __________ energy is available and the correct atoms are __________.

IV. Biological Reactions 1. is a molecule that _________ the _________ of a reaction B. __________Activity 1. _________ site a. the _______ where the ___________ takes place 2. _____________ a. reactant in a chemical reaction

3. Enzymes and substrates. work like a _______ & _____or C. _____________ 1. Breaking down of your _____ into useful ________ (____) 2. Use _________to reduce the _________ energy 3. Carried out in a _______ by ________ process 4. Very little _____ is produced