Physical Properties of Matter

Definition of Matter: Matter is anything that has mass and occupies space.
Key Physical Properties: The physical properties of matter that are commonly studied include:
- Density: Defined as mass per unit volume, measured in grams per cubic centimeter (g/cm³).
- Hardness: A measure of how resistant a material is to deformation, usually assessed using the Mohs scale (1 = talc, 10 = diamond).
- Streak: The color of the powder left behind when a mineral is scraped across a surface, often a more reliable indicator of the mineral than its appearance.
Data Collection:
- Use tools like the Gizmo (simulated lab) to collect information on various mineral samples. Common attributes that should be measured include:
- Sample Name: Clearly label each mineral sample.
- Area: Describe the collection area for geographical context.
- Density, Hardness, and Streak: Take careful measurements for each sample.
Identifying Minerals:
- Utilize a Mineral Key, which is a reference guide to assist in identifying minerals based on their physical properties.
- Document findings:
- Sample Number: List the number of the sample being identified.
- Mineral Name (First Try): Write down the initial guess of the mineral based on observation.
- Mineral Name (Actual): Record the correct identification after consulting the mineral key.
- Correct on First Try?: Include a yes/no to indicate whether the initial identification was correct.
Example Data Table of Mineral Identifications:
| Sample | Mineral Name (First Try) | Mineral Name (Actual) | Correct on First Try? |
|--------|-------------------------|----------------------|-----------------------|
| M | Feldspar | Quartz | No |
| N | Calcite | Calcite | Yes |
| O | Hematite | Hematite | Yes |
| P | Mica | Biotite | No |
| Q | Pyrite | Pyrite | Yes |
| R | Gypsum | Gypsum | Yes |