Chemical elements: symbol to name and basic properties
25 cards · science · Reversible
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| Front | Back |
|---|---|
| H | Hydrogen #1; lightest element; forms water and fuels stellar fusion. |
| He | Helium #2; inert noble gas; used in cryogenics and balloons. |
| C | Carbon #6; backbone of organic molecules; diamond and graphite allotropes. |
| N | Nitrogen #7; ~78% of air; essential in amino acids and DNA. |
| O | Oxygen #8; supports respiration and combustion; ~21% of air. |
| F | Fluorine #9; most electronegative; used in fluorides and Teflon. |
| Na | Sodium #11; soft alkali metal; Na+ vital for nerve signaling. |
| Mg | Magnesium #12; light metal; Mg2+ in chlorophyll; used in alloys and flares. |
| Al | Aluminum #13; lightweight, corrosion‑resistant; common in cans and aircraft. |
| Si | Silicon #14; semiconductor; basis of chips and abundant in silicates. |
| P | Phosphorus #15; in ATP and DNA; key component of fertilizers. |
| S | Sulfur #16; yellow nonmetal; used to make sulfuric acid and sulfates. |
| Cl | Chlorine #17; reactive halogen; disinfectant and part of table salt. |
| K | Potassium #19; highly reactive alkali metal; K+ essential in cells. |
| Ca | Calcium #20; builds bones and teeth; used in cement and shells. |
| Fe | Iron #26; key for hemoglobin; primary component of steel. |
| Cu | Copper #29; excellent conductor; used in wiring and coins. |
| Zn | Zinc #30; used for galvanization and in brass; enzyme cofactor. |
| Br | Bromine #35; reddish liquid halogen; used in flame retardants. |
| Kr | Krypton #36; noble gas; used in lighting and insulating windows. |
| Ag | Silver #47; highest electrical conductivity; jewelry and electronics. |
| Pt | Platinum #78; inert catalyst; used in catalytic converters and jewelry. |
| Au | Gold #79; dense, inert metal; used in jewelry and electronics. |
| Pb | Lead #82; dense, toxic metal; used in batteries and radiation shielding. |
| U | Uranium #92; radioactive actinide; U‑235 used as nuclear reactor fuel. |