Which reaction is exothermic?
A. Cellular respiration
B. Photosythesis
C. Baking soda+ vinegar
D. Melting ice
Is the answer A?
A is correct.
I hope this helps! :)
Thank you:)
You're welcome, Callie. :)
To determine which reaction is exothermic, we need to understand what the term "exothermic" means. An exothermic reaction is a chemical reaction that releases or gives off heat energy to its surroundings.
Now, let's analyze the options:
A. Cellular respiration: Cellular respiration is the process by which cells convert glucose and oxygen into carbon dioxide, water, and energy in the form of ATP. This reaction releases energy, but it takes place inside living organisms, so it doesn't directly release heat energy to the surroundings.
B. Photosynthesis: Photosynthesis is the process by which plants convert carbon dioxide, water, and sunlight into glucose and oxygen. Although photosynthesis requires energy from sunlight, it is an endothermic reaction, as it absorbs energy rather than releasing it.
C. Baking soda + vinegar: When baking soda (sodium bicarbonate) reacts with vinegar (acetic acid), it produces carbon dioxide gas, water, and sodium acetate. This reaction is exothermic, as it releases heat energy into the surroundings.
D. Melting ice: Melting ice is a physical process rather than a chemical reaction, and it requires the input of heat energy to convert solid ice into liquid water. So, melting ice is an endothermic process.
Based on the explanations above, the correct answer is C. Baking soda + vinegar.