Physical Change Versus Chemical Change
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What occurs during a chemical change?
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The substance dissolves
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The substance changes color
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The substance's composition changes
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The substance changes smell
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- 2.
What occurs during a physical change?
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The substance changes in appearance, smell, or any other outer change.
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The substance changes its internal structure
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The substance's composition changes drastically
Correct Answer
A. The substance changes in appearance, smell, or any other outer change.Explanation
During a physical change, the substance undergoes a transformation in its physical properties, such as appearance, smell, or any other outer change. This means that the substance may change its state of matter, shape, size, or other observable characteristics, but its internal structure and composition remain the same.Rate this question:
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- 3.
Is the following a physical or chemical change? Bread rising.
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Physical change
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Chemical change
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Neither
Correct Answer
A. Chemical changeExplanation
Bread rising is a chemical change. During the process of bread rising, yeast in the dough undergoes fermentation, converting sugars into carbon dioxide gas. This gas gets trapped in the dough, causing it to expand and rise. The chemical composition of the dough is altered as a result of this reaction, making it a chemical change rather than a physical one.Rate this question:
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- 4.
Is the following a physical or chemical change? Whipping egg whites.
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Physical change
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Chemical change
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Neither
Correct Answer
A. Physical changeExplanation
Whipping egg whites is a physical change because it does not involve the formation of any new substances. When egg whites are whipped, air is incorporated into them, causing the proteins in the egg whites to denature and form a foam-like structure. However, the chemical composition of the egg whites remains the same. Therefore, this process does not result in the formation of new substances and is considered a physical change.Rate this question:
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- 5.
Is the following a physical or chemical change?Dissolving sugar into water.
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Physical change
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Chemical change
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Neither
Correct Answer
A. Physical changeExplanation
Dissolving sugar into water is a physical change because it does not involve a chemical reaction. In this process, the sugar molecules are dispersed throughout the water, forming a homogeneous mixture. The chemical composition of both the sugar and water remains the same, only the physical state of the sugar changes from solid to dissolved. No new substances are formed, indicating that it is a physical change rather than a chemical change.Rate this question:
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- 6.
Is the following a physical or chemical change? Gasoline burning.
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Physical change
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Chemical change
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Neither
Correct Answer
A. Chemical changeExplanation
Gasoline burning is a chemical change. When gasoline burns, it undergoes a chemical reaction with oxygen in the air, resulting in the production of carbon dioxide, water vapor, and heat. This change is irreversible, as the original gasoline molecules are transformed into new substances. Therefore, it is considered a chemical change rather than a physical change, which refers to a change in the physical properties of a substance without altering its chemical composition.Rate this question:
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- 7.
If the substances changes in color, texture, or temperature, is this a physical or chemical change?
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Physical
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Chemical
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Neither
Correct Answer
A. PhysicalExplanation
When a substance changes in color, texture, or temperature, it is considered a physical change. This is because these changes do not alter the chemical composition or the identity of the substance. Physical changes only affect the physical properties of the substance, such as its appearance or state of matter. In this case, the change in color, texture, or temperature is reversible and does not involve a chemical reaction.Rate this question:
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- 8.
Is a change in state (solid, liquid, etc...) a physical or chemical change?
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Physical change
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Chemical change
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Neither
Correct Answer
A. Physical changeExplanation
A change in state, such as from solid to liquid or liquid to gas, is considered a physical change because it does not involve a change in the chemical composition of the substance. In a physical change, the molecules or atoms rearrange themselves, but their fundamental structure remains the same. This is different from a chemical change where new substances with different chemical properties are formed. Therefore, a change in state is classified as a physical change.Rate this question:
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Apr 11, 2025Quiz Edited by
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Oct 14, 2015Quiz Created by
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