| Question | Answer |
| Buffer systems | They help control the body's acid-base balance at levels suitable for life. |
| Salt | It is an ionic compound formed when an acid reacts with a base. |
| Bases | accept hydrongen ions when dissolved in water. (Basic solutions have a pH above 7). |
| Acids | hey are substances that donate hydrogen ions. (Acidic solutions have a pH below 7). |
| pH scale | The scale is a way to measure the relative amount of hydrogen ions in solutes such as seawater, blood, or sap. |
| Cohesion | This means that something is showing a capacity to resist rupturing when it is streching, or placed under tension. |
| Solute | A dissolved substance. |
| Evaporation | Heat energy converts liquid water to a gas. |
| Temperature | A measure of molecular motion. |
| Hydrophobic | Nonpolar molecules. Water dreading substnces. |
| Hydrophilic | Polar molecules. Water loving substances. |
| hydrogen bond | An atom of a molecule interacts weakly with hydrogen atom already taking part in a polar covalent bond. These bonds impart structure to liquid water and stabilizes nucleic acids and other large molecules. |
| Polar Covalent Bond | Because atoms are shared unequally, there is a slight difference in charge between the two poles of the bond; water is an example. |
| Nonpolar covalent bond | Atoms share electrons equally. |
| Covalent bond | This bond is joined when atoms share one or more electrons. |
| Ionic Bond | A close association of ions by attraction of opposite charges. |
| Mixture | Two or more molecules are intermingled without chemically bonding. |
| Compounds | They are molecules that consist of two or more different elements in proportions that never do vary. |
| Molecule | It is simplt two or more atoms of the same or different elements joined in a chemical bond. |
| Chemical bonding | It is a union between the electron structures of atoms. |
| Tracers | Radioisitope gets substituted for a stable element in that molecule |
| Radioactive isotopes (Radioisitope) | Unstable and tend to decay into more stable atoms. |
| isotopes | Atoms with the same number of protons but a different number of neutrons. |
| Periodic Table | An arrangement of elements based on their chemical properties. |
| Mass Number | It is equal to the number of protons and neutrons in the atomic nucleus. |
| Atomic Number | The number of protons in the nucleus of its atoms. |
| Electrons | They have a negative charge. there quantity is equal to that of the protons. They zip around the nucleus. |
| Neutrons | They are a part of the nucleus; they are neurtal. |
| Proton | It carries a positive charge, or a defined amount of electricity. They are also part of the atomic nucleus. p+ |
| Atoms | They are the smallest units that retain the properties of an element. All atoms are made up are made of three kinds subatomic particles: proteins, neutrons, and electrons. |
30 cards - created jan 15, 10:52am