| A | B |
|---|
| Al2S3 | The formula for the compound formed when Al3+ combines with S2- is: |
| calcium hydroxide | The compound whose formula is Ca(OH)2 is named: |
| 14 | The total number of atoms present in one molecule of (NH4)2CO3 is: |
| chemical symbols | Na and Cl are: |
| 1:1 | In the formula HCl, the ratio of hydrogen atoms to chlorine atoms is: |
| 2 hydrogen atoms | The number 2 in the formula H2O tells you that each unit of this compound contains: |
| ml | The correct symbol for milliliter is: |
| g/cm3 | the most correct way to express density it: |
| m | The basic unit of length in the metric system is the: |
| elements | Substances that CANNOT be broken down chemically into other substances are: |
| kilogram | The SI unit for mass |
| panning | what technique did the early miners use to separate gold from sand and dirt |
