Question

part a. instructions: for each of the following descriptions, identify it as being a physical or chemical property.

1. color =
2. flammability =
3. density =
4. texture =
5. hardness =
6. ability to rust =
7. odor =
8. acidity =
9. boiling point =
10. reactivity =

Explanation:

Step1: Recall physical and chemical property definitions

Physical properties can be observed or measured without changing the substance's chemical identity. Chemical properties describe a substance's ability to undergo chemical changes.

Step2: Analyze each property

• Color can be observed without changing the substance, so it's a physical property.
• Flammability involves a substance burning (a chemical change), so it's a chemical property.
• Density is a ratio of mass to volume and can be measured without chemical change, so it's a physical property.
• Texture can be observed without chemical change, so it's a physical property.
• Hardness can be measured without chemical change, so it's a physical property.
• Ability to rust involves a chemical reaction (oxidation), so it's a chemical property.
• Odor can be detected without chemical change, so it's a physical property.
• Acidity involves chemical reactions with bases, so it's a chemical property.
• Boiling point is a physical change (liquid - gas transition) and can be measured without chemical change in the substance's identity, so it's a physical property.
• Reactivity involves chemical reactions, so it's a chemical property.

Answer:

1. Physical property
2. Chemical property
3. Physical property
4. Physical property
5. Physical property
6. Chemical property
7. Physical property
8. Chemical property
9. Physical property
10. Chemical property