| A | B |
|---|
| Acceleration | Is the rate of change of velocity as a function of time. It is vector.,  |
| Balanced Chemical Equation | An equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge are the same for both the reactants and the products. In other words, the mass and the charge are balanced on both sides of the reaction.,  |
| Chemical Formula | A chemical formula or molecular formula is a way of expressing information about the atoms that constitute a particular chemical compound.,  |
| Convex lens | a lens that is thicker in the center than at the edges.,  |
| Electrochemical cell | a device that converts chemical energy into electrical energy.,  |
| Fluid friction | Friction that occurs as an object moves through a fluid.,  |
| Heat engine | A device that converts thermal energy into mechanical energy,  |
| Insulator | A material such as glass or porcelain with negligible electrical or thermal conductivity,  |
| Machine | A device that transfers mechanical energy from one object to another object.,  |
| Music | Set of tones and overtones combined in ways that are pleasing to the ear.,  |
| Parallel circuit | An electrical circuit with several paths for the current to take,  |
| Product | A substance obtained from another substance through chemical change,  |
| Series circuit | An electric circuit with series path for the current to take.,  |
| Sublimation | The change in state from a solid directly to a gas without passing through the liquid state.,  |
| Unbalanced Forces | Forces that push in opposite directions, and one, being stronger, causes motion of an object or air,  |
