QuestionIdentify if each statement is a physical or chemical property:
1. Neon is a colorless gas at room temperature.
2. Apple slices turn brown when exposed to air.
3. Phosphorus ignites in air.
4. Mercury is a liquid at room temperature.
Studdy Solution
STEP 1
Assumptions1. We are asked to classify each statement as describing a physical or chemical property.
. A physical property is a characteristic of a substance that can be observed or measured without changing the substance's identity. Examples include color, state of matter (solid, liquid, gas), boiling point, and melting point.
3. A chemical property is a characteristic of a substance that describes its ability to change into a different substance. Examples include reactivity with other chemicals, flammability, and ability to rust or oxidize.
STEP 2
Let's analyze the first statement "Neon is a colorless gas at room temperature." This describes the state of matter of neon (gas) and its color (colorless) at a certain temperature. These are characteristics that can be observed without changing the identity of neon. Therefore, this statement describes a physical property.
STEP 3
The second statement is "Apple slices turn brown when exposed to air." This describes a change that occurs when apple slices are exposed to air. The browning of the apple slices is a result of a chemical reaction (oxidation) that changes the identity of the apple slices. Therefore, this statement describes a chemical property.
STEP 4
The third statement is "Phosphorus will ignite when exposed to air." This describes a reaction that occurs when phosphorus is exposed to air. Ignition is a chemical reaction that changes the identity of the phosphorus. Therefore, this statement describes a chemical property.
STEP 5
The fourth statement is "At room temperature, mercury is a liquid." This describes the state of matter of mercury (liquid) at a certain temperature. This is a characteristic that can be observed without changing the identity of mercury. Therefore, this statement describes a physical property.
To summarize1. "Neon is a colorless gas at room temperature." - Physical Property2. "Apple slices turn brown when exposed to air." - Chemical Property3. "Phosphorus will ignite when exposed to air." - Chemical Property4. "At room temperature, mercury is a liquid." - Physical Property
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