click below
click below
Normal Size Small Size show me how
Worksheet 1
Matter and Energy
| Question | Answer |
|---|---|
| Matter | Anything that takes up space. |
| Energy | The capacity to work |
| Work | The capacity to move matter |
| Law of matter | can neither be created nor destroyed. It can only be transformed. |
| Law of energy. | Can neither be created nor destroyed. it can only be transformed. During transformation some energy can be lost "as heat" |
| Law of entropy | a net increase of entropy in a physical closed system. |
| Potential | matter with a stored energy |
| Kinetic | energy associated with matter in motion. |
| How many elements are there that we often encounter in our body? | 13 |
| H | hydrogen |
| Ca | Calcium |
| C | Carbon |
| Cl | Chlorine |
| Na | Sodium |
| S | Sulfur |
| P | Phosphorus |
| I | Iodine |
| K | Potassium |
| O | oxygen |
| N | nitrogen |
| Mg | Magnesium |
| Fe | Iron |
| Atomic number | Indicates the number of protons in the nucleus. |
| Atomic mass | Indicates the total of protons and neutrons in the nucleus. |