Density of substances
To determine the density of some liquid and solid substances by measuring volumes and masses.
Cosa imparano gli studenti
La scienza alla base di questo esperimento
Density is a fundamental property of matter which depends on the state of aggregation and varies with temperature. It is a function of both mass and volume, defined as the ratio of mass to volume.
Density is a property of matter defined as the ratio of mass to volume.
Density depends on the state of aggregation of matter. For example diamond and graphite have different densities but both are composed of carbon. Density also depends on temperature. For example, an ice cube has a different density than a volume of water with the same mass as the ice cube.
Attrezzatura utilizzata
- Graduated glass cylinder 100 ml — 1226.16
- Beaker 100 ml — 1118.20
- Electronic balance — 2219.30
Sostanze chimiche e reagenti
- Acqua distillata
- Glycerol
- A solid object
- An ice cube
Note sulla sicurezza
- No particular notes on this experiment.
Domande per gli studenti
- From the recorded data, calculate the density of the substances.
- Compare the density of ice with the density of water. Do you think other substances behave in the same way when frozen?
- Should you have calculated the ice cube volume by immersing it into the cylinder? Why?
Cosa aspettarsi
Smaltimento
Add an equal volume of warm water to the glycerol and dispose of the solution into the liquid wastes container.
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