| 1. | Zinc displaces the hydrogen of dilute acids .
锌置换了稀酸中的氢。 |
| 2. | The hydroperoxides are unstable compounds .
氢过氧化物是不稳定的化合物。 |
| 3. | Water is composed of hydrogen and oxygen .
水由氢与氧化合而成。 |
| 4. | Water consists of hydrogen and oxygen .
水由氢和氧二元素合成。 |
| 5. | Water is composed of hydrogen and oxygen .
水是由氢和氧组成。 |
| 6. | Water can be resolved [decomposed] into hydrogen and oxygen .
水可分解为氢和氧。 |
| 7. | Water is composed of the elements hydrogen and oxygen .
水是由氢、氧元素组成的。 |
| 8. | Hydrogen is a one-valence element .
氢是一价的元素。 |
| 9. | Soluble metallic hydroxides are bases that are alkalies .
可溶解的金属氢氧化合物都是碱。 |
| 10. | Oxygen and hydrogen make water .
氧和氢构成水。 |
