Answer:
The answer to your question is: A, C, E
Explanation:
After reading the information given, we can conclude that both reactants react to form a new solid product and another product that do not precipitate.
The reaction is:
AgNO₃ + NaCl ⇒ AgCl + NaNO₃
a. Formation of a solid indicates that a chemical reaction occurred This option is correct, precipitation indicates that a changed occurred in the solution due to a chemical reaction.
b. The initial disappearance of silver nitrate in water indicates a chemical reaction occurred No, what is happing is that silver nitrate is dissolving in water, this process is a physical change because matter do not change its nature.
c. The color change of the solution indicates a chemical reaction occurred This option is true, when a color appears suggest the formation of a new product.
d. A chemical reaction occurred when silver nitrate was added to water
This option is not correct, in this process silver nitrate is dissolving in water but it is not a chemical reaction because matter does not change is nature.
e. A chemical reaction occurred when the solutions were combined This option is true because silver nitrate and sodium chloride react to form a new product (solid formation and change in color).
f. The lack of temperature change indicates a chemical reaction didn't occur This is false, some reactions do not need a change of color to happen.
