Which reaction did you perform in the hands-on activity? based on your observations, was the reaction endothermic or exothermic? explain your answer in complete sentences?

The reaction that we can perform in the hands-on activity is the reaction between vinegar and baking that is acetic acid and sodium hydrogen carbonate.

This reaction results in the formation of bubbles and turned lime water milky. The lime turned milky due to evolution of carbon dioxide gas. And the temperature of the test tube in which vinegar and baking soda is kept, got lowered. Due to this decrease in temperature, this reaction is classified as endothermic reaction.

the answer is d : ) have a good da

the tides are influenced by both the moon and the sun, it's easy to see that when the sun lines up with the moon and the earth, as during a new moon or full moon, the tidal effect is increased. these are known as spring tides, named not for the season, but for the fact that the water "springs" higher than normal. on the other hand, if the sun and the moon are 90 degrees apart in relation to an observer on earth as during the first quarter moon or third quarter moon, then high tides are not as high as they normally would be. this is because despite its greater distance, the sun's mass allows it to exert enough gravitational force on the oceans that it can negate some of the effects of the moon's pull. this phenomenon of lower high tides is called a neap tide. if you need more information on this topic visit moonconnection.com.