121060
| Pregunta | Respuesta |
| describe equipment used for an experiment to investigate the effect of temperature on the rate of diffusion using agar blocks containing an indicator | 10mm3 of agar x3, water baths set at different temps, test tubes, 2M HCl acid, syringe, stopwatch, labels |
| what is the control for the agar temp investigation experiment? | agar cube at room temp |
| what is the control for the agar temp investigation experiment? | agar cube at room temp |
| step 1 | put the agar blocks in each test tube and pour in 10cm3 HCl acid into each |
| step 2 | place one in water bath and start stopwatch and time how long the pink takes to disappear and for each block to turn completely colourless |
| step 3 | take average after repeating experiment 2 more times |
| what will you change | the temp of the water baths |
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