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makvit [3.9K]
3 years ago
14

which caused a change in matter. Select each procedure that is likely a chemical change. Salt crystals were crushed into a fine

powder. Bubbles were produced when iron was placed in acid. Two liquids were combined, and a solid appeared. A piece of metal melted when it was heated. A white substance turned blue when water was added.
Chemistry
2 answers:
REY [17]3 years ago
8 0

These 2 are physical changes:

Salt crystals were crushed into a fine powder.

A piece of metal melted when it was heated.


These are likely to be chemical changes:

Bubbles were produced when iron was placed in acid.

Two liquids were combined, and a solid appeared.

A white substance turned blue when water was added.



olga55 [171]3 years ago
5 0

Procedures that are likely a chemical change are:

- Bubbles were produced when iron was placed in acid.

- Two liquids were combined, and a solid appeared

- A white substance turned blue when water was added.


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The response would become spontaneous if the value of  ΔG° was negative.

According to the estimated value of  ΔG°, it is shown that  ΔG° value decreases as temperature value increases. The value shifts from being more favorable to being less favorable. It would appear that the value of  ΔG° would be negative at a specific temperature, causing the reaction to occur spontaneously.

The reaction is in an equilibrium state if  ΔG = 0. If ΔG < 0, the reaction is spontaneous in the direction written. The relationship between terms from the equilibrium is paralleled by the relevance of the sign of a change in the Gibbs free energy.

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1 year ago
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The mass of SO2 will be equal to the sum of the mass of S and O2.

Explanation:

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In one to two sentences give one reason reactants might not equal visible products after a chemical reaction
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3 years ago
According to the Brensted-Lowry model write the equation for provided acid showing
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