A student investigated the effect of placing sweet potato cylinders in pure water.
| Sweet potato cylinder | Mass at start in grams | Mass after 1 hour in grams | Change in mass in grams |
|---|---|---|---|
| A | 5.10 | 5.65 | +0.55 |
| B | 5.00 | 5.50 | +0.50 |
| C | 5.20 | 5.72 | +0.52 |
Explain why the sweet potato cylinders increased in mass.
