The evidence that would help Dalton and Marcy answer the questions are the following:
1. Formation of a new gas: If they observed the release of a gas in response to the interaction between the solid and liquid, it would provide evidence that a new gas was formed. This indicates a chemical reaction, as gases are often produced as a result of chemical reactions.
2. Dissolution of a solid in a liquid: If they observed the solid substance disappearing or dissolving completely in the liquid, it would provide evidence that the solid was soluble in the liquid. This indicates a physical change, as dissolution is a physical process.
3. Observation of a new color: If they noticed a change in color during the interaction between the solid and liquid, it would provide evidence that a chemical reaction occurred. Changes in color often indicate the formation of new substances.
4. Identification of a new property: If they observed a new property of one of the substances involved, such as a change in odor, taste, texture, or any other characteristic, it would provide evidence that a chemical reaction had taken place. New properties can signify the formation of new compounds or substances.
Which of the following pieces of evidence help Dalton and Marcy answer questions a new gas was formed a solid dissolved in a liquid. They saw a new color one of the substance formed had a new property.
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