Question

question 1 - 1
coins in the united states are made from a variety of metals, including copper, nickel, and zinc. copper coins, like pennies, turn green when exposed to water.
what happens to this chemical reaction if the coins are heated?
the coins will turn green at the same rate as before because temperature has no effect on the speed of chemical reactions
the coins will not turn green, algae cannot survive in hot temperatures.

Explanation:

According to the principles of chemical reactions, temperature affects reaction rates. Higher temperatures generally increase the kinetic energy of molecules, leading to more frequent and energetic collisions, which speeds up reactions. In this case, heating the coins would likely increase the rate at which they turn green (a chemical reaction involving copper and water). Algae growth (if relevant) might also be affected by temperature, but the primary focus here is on the chemical reaction of the coins. Option 1 is incorrect as temperature does affect reaction speeds. Option 2 is also incorrect as heating would change the reaction rate. Option 3 is correct as heating would increase the reaction rate (coins turning green faster), and if algae are part of the system (though not the main chemical reaction here, but assuming a combined context), higher temperatures (beyond their optimal range) could inhibit their survival.

Answer:

The coins will turn green faster (increased reaction rate due to heating), and algae (if present) may not survive in hot temperatures (depending on their heat tolerance). So the correct answer is: The coins will turn green faster (chemical reaction rate increases with temperature), and algae cannot survive in hot temperatures (if applicable in the context).