| denature the enzyme | 0.33 |
| stay in the ice-bath | 0.33 |
| move at slow speed | 0.33 |
| give positive result | 0.24 |
| the gas | 0.47 |
| sample | 0.39 |
| little activity | 0.33 |
| 1 ml of 2.0 mol | 0.33 |
| round bottom | 0.25 |
| 3 ml of water | 0.25 |
| up to three cool activi… | 0.16 |
| lots of science | 0.16 |
| filled with water | 0.68 |
| removed | 0.60 |
| placed | 0.57 |
| placed in boiling water | 0.47 |
| heated | 0.43 |
| placed in a test tube h… | 0.39 |
| added | 0.39 |
| capped | 0.33 |
| kept at room temperature | 0.25 |
| shaken | 0.25 |
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