Terms : Hide Images
| 7517789141 | Matter waves | anything that takes up space and has mass | 0 | |
| 7518140303 | Base | A substance that contributes hydroxide to a solution | 1 | |
| 7518140304 | radioactive decay | The breakdown of a radioactive element, releasing particles and energy | 2 | |
| 7518140305 | Atom | The smallest particle that can contain properties of an element | 3 | |
| 7518140306 | Acid | A substance that contributes hydrogen ions to a solution. | 4 | |
| 7518140307 | Compound | A molecule containing more that one element. | 5 | |
| 7518140308 | Covalent bonds | The bond formed when an element a electrons | 6 | |
| 7518140309 | Ionic bonds | A chemical bond between two ions of opposite charges | 7 | |
| 7518140310 | Element | A substance composed of atoms that can not be broken down into smaller, simpler comemsmysn | 8 | |
| 7518140311 | Isotopes | Atoms of the same energy with dig | 9 | |
| 7518140312 | Molecule | Particle that contains more than one atom | 10 | |
| 7518140313 | Half-life | Time it takes for one half of an original radioactive. Parent atom to decay | 11 | |
| 7517789142 | periodic table | A chart of all chemical elements currently known, organized by their properties. | 12 | |
| 7518140314 | Mass | Amount of matter an object contains | 13 | |
| 7518140315 | pH | Number that indicates the regular strength of acids and bases in a substance | 14 | |
| 7518140316 | Law of conservation of matter | A law of nature stating that matter cannot be created or destroyed; it can only change form | 15 | |
| 7518140317 | 1st law of thermodynamics | Physical law which states that energy can neither be created nor destroyed but can change from one for to another | 16 | |
| 7518280779 | 2nd law of thermodynamics | Energy cannot be changed from one form to another without a loss of usable energy | 17 | |
| 7518280780 | Energy | Ability to do work | 18 | |
| 7518280781 | potential energy | stored energy | 19 | |
| 7518280782 | open system | a system in which exchanges of matter or energy occur across system boundaries | 20 | |
| 7518280783 | closed system | A system in which no matter is allowed to enter or leave | 21 | |
| 7518280784 | Power | The rate at which work is done | 22 | |
| 7518280785 | chemical energy | Energy stored in chemical bonds | 23 | |
| 7518280786 | Inputs | Addition to a system | 24 | |
| 7518280787 | Outputs | losses from a system | 25 | |
| 7518280788 | kinetic energy | Energy of motion | 26 | |
| 7518280789 | energy efficiency | The percentage of energy put into a system that does useful work | 27 | |
| 7518280790 | Photon | a tiny particle or packet of light energy | 28 | |
| 7518280791 | Temperature | A measure of how hot or cold something is. | 29 | |
| 7518280792 | energy quality | A measure of an energy's source's ability to do useful work. | 30 | |
| 7518280793 | Positive feedback loop | Causes a system to change further in the same direction. | 31 | |
| 7518280794 | negative feedback loop | System caused change by returning to its original state | 32 | |
| 7518280795 | electromagnetic radiation | a form of energy that exhibits wavelike behavior as it travels through space | 33 |
