We can classify the following properties as:
- a. Aluminum has a silvery color. Physical property.
- b. Gold has a density of 19 g/cm³. Physical property.
- c. Sodium ignites when dropped in water. Chemical property.
- d. Water boils at 100°C. Physical property.
- e. Silver tarnishes. Chemical property.
- f. Mercury is a liquid at room temperature. Physical property.
The properties of matter can be:
- A physical property: a characteristic of a substance that can be observed or measured without changing the identity of the substance.
- A chemical property: describes the ability of a substance to undergo a specific chemical change.
Classify each as a physical property or a chemical property.
- a. Aluminum has a silvery color. Physical property. Aluminum doesn't change by observing its color.
- b. Gold has a density of 19 g/cm³. Physical property. Gold doesn't change by measuring its density.
- c. Sodium ignites when dropped in water. Chemical property. Sodium reacts with water to form sodium hydroxide and hydrogen.
- d. Water boils at 100°C. Physical property. Water changes from the liquid to the gaseous state, but it still is water.
- e. Silver tarnishes. Chemical property. Silver reacts with sulfur-containing compounds in the air to form silver sulfides.
- f. Mercury is a liquid at room temperature. Physical property. Mercury doesn't change by observing its state of aggregation.
We can classify the following properties as:
- a. Aluminum has a silvery color. Physical property.
- b. Gold has a density of 19 g/cm³. Physical property.
- c. Sodium ignites when dropped in water. Chemical property.
- d. Water boils at 100°C. Physical property.
- e. Silver tarnishes. Chemical property.
- f. Mercury is a liquid at room temperature. Physical property.
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