Question 28
Water has a density of 1.00 g/cm³ at room temperature. Work in groups to find out which materials float or sink in water. 1. Prepare the following materials: a big bowl of water, a plastic cap, a bronze coin, a bottle cork and a glass marble (Figure 9.18).
2. Put each object into the water. Record your observations in the second column of the table below.
3. Find out the density of each material using the Internet and complete the table.
| Material | Does it float or sink in water? | Density in g/cm³ |
|---|---|---|
| water | – | 1.00 |
| plastic | ___ | ___ |
| bronze | ___ | ___ |
| cork | ___ | ___ |
| glass | ___ | ___ |
2. Put each object into the water. Record your observations in the second column of the table below.
3. Find out the density of each material using the Internet and complete the table.
| Material | Does it float or sink in water? | Density in g/cm³ |
|---|---|---|
| water | – | 1.00 |
| plastic | ___ | ___ |
| bronze | ___ | ___ |
| cork | ___ | ___ |
| glass | ___ | ___ |
