Heat and Temperature All particles are always in motion, even in solids. Kinetic energy= The energy of motion. Heat= a measure of the total kinetic energy of the molecules in a system. Heat energy is the energy that causes the particles of a substance to move faster.

The faster the particles move, the higher the temperature of the substance becomes. Temperature= the measure of the average energy of motion (the average kinetic energy) of all the particles in a substance.

Conservation of Matter Law of Conservation of Matter= Matter cannot be created or destroyed. During both physical and chemical changes, there is no overall increase or decrease in the quantity of the matter that is changing. The law of conservation is applied to matter, energy, and mass.

Chemical Reactions Chemical reaction= A change in which a substance (or substances) is changed into one or more new substances. There are reactants and products in every chemical reaction. Reactant= The original substances that are changed. Product= The new substances that are formed. Reactant A + Reactant B= Product A + Product B

Draw the following table and fill it out to the best of your ability for the reaction demonstrated. Properties of Reactant(s) Properties of Product(s) Signs that a reaction occured

Signs of a chemical reaction There are 5 signs of a chemical reaction: 1) Color change 2) Temperature change 3) Production of a gas (fizz or bubbles) 4) Production of light 5) Formation of a solid from 2 or more liquids Are the properties of the products of a chemical reaction the same as the properties of the reactants?