Physical and Chemical Changes Quiz

What is a physical change?

• A physical change is a change in which the substance's physical appearance remains the same.

• A physical change is a change in which the substance disappears completely.

• A physical change is a change in which the substance's physical appearance or state is altered, but its chemical composition remains the same.

• A physical change is a change in which the substance's chemical composition is altered.

Give an example of a physical change.

• Mixing salt in water

• Burning wood

• Melting ice into water

• Cooking an egg

What is a chemical change?

• A chemical change is a process in which one or more substances are converted into different substances with different properties.

• A chemical change is a process in which substances remain the same

• A chemical change is a process in which substances are converted into different substances with no properties

• A chemical change is a process in which substances are converted into different substances with the same properties

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Give an example of a chemical change.

• Boiling water

• Melting ice

• Mixing salt and water

• Burning of wood is an example of a chemical change.

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What are some signs of a chemical change?

• Change in size

• Change in shape

• Change in texture

• Color change, gas production, temperature change, formation of a precipitate

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Is burning wood a physical or chemical change?

• Burning wood is a biological change.

• Burning wood is a chemical change.

• Burning wood is a physical change.

• Burning wood is a change of state.

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Is boiling water a physical or chemical change?

• Boiling water is a chemical change.

• Boiling water is a solid change.

• Boiling water is a physical change.

• Boiling water is a biological change.

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What happens to the properties of a substance during a physical change?

• The properties of a substance remain the same during a physical change, such as changes in state (solid, liquid, gas) or shape.

• The properties of a substance become unrecognizable during a physical change

• The properties of a substance disappear during a physical change

• The properties of a substance become completely different during a physical change

What happens to the properties of a substance during a chemical change?

• The properties of a substance disappear during a chemical change

• The properties of a substance change during a chemical change, such as color, odor, and composition.

• The properties of a substance remain the same during a chemical change

• The properties of a substance become more stable during a chemical change

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What is the law of conservation of mass?

• Mass can be created in a chemical reaction

• The law of conservation of mass states that mass can neither be created nor destroyed in a chemical reaction, it can only change forms.

• Mass can only change forms in a physical reaction

• Mass can be destroyed in a chemical reaction

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