A chemical change, also known as a chemical reaction, can be identified by certain characteristics or signs. In this case, the following steps justify that a chemical change has occurred:

1. Change in Color: The initial solutions were clear and colorless, but after mixing, a yellow solid forms. This change in color is a strong indicator of a chemical reaction.

2. Formation of a Precipitate: A precipitate is a solid that forms from a solution during a chemical reaction. The formation of a yellow solid (precipitate) after the two solutions are mixed is another sign that a chemical reaction has taken place.

3. No Physical Separation: If the yellow solid cannot be separated from the solution by physical means (like filtration or evaporation), it suggests that a new substance has been formed through a chemical change.

These signs collectively provide a justification that a chemical change has happened when the two clear, colorless solutions are mixed together.

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A chemical change, also known as a chemical reaction, can be identified by certain characteristics or signs. In this case, the following steps justify that a chemical change has occurred:

1. Change in Color: The initial solutions were clear and colorless, but after mixing, a yellow solid forms. This change in color is a strong indicator of a chemical reaction.

2. Formation of a Precipitate: A precipitate is a solid that forms from a solution during a chemical reaction. The formation of a yellow solid (precipitate) after the two solutions are mixed is another sign that a chemical reaction has taken place.

3. No Physical Separation: If the yellow solid cannot be separated from the solution by physical means (like filtration or evaporation), it suggests that a new substance has been formed through a chemical change.

These signs collectively provide a justification that a chemical change has happened when the two clear, colorless solutions are mixed together.

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A chemical change, also known as a chemical reaction, can be identified by certain characteristics or signs. In this case, the following steps justify that a chemical change has occurred:

1. Change in Color: The initial solutions were clear and colorless, but after mixing, a yellow solid forms. This change in color is a strong indicator of a chemical reaction.

2. Formation of a Precipitate: A precipitate is a solid that forms from a solution during a chemical reaction. The formation of a yellow solid (precipitate) after the two solutions are mixed is another sign that a chemical reaction has taken place.

3. No Physical Separation: If the yellow solid cannot be separated from the solution by physical means (like filtration or evaporation), it suggests that a new substance has been formed through a chemical change.

These signs collectively provide a justification that a chemical change has happened when the two clear, colorless solutions are mixed together.

wo clear, colourless solutions are mixed together. When they are mixed, a yellow solid (precipitate) forms in the colourless solution. Justify how you know that a chemical change has happened.

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