f this helps typically an element wont have a 2 next to it, to see if something is an element or compound check for the element on the periodic table and see if the structure or name matches the one given to you on the question. for example here it is Co2 on the periodic table it's simply written as Co
co2 or carbon dioxide is a compound not an element, you can even check this on the periodic table
Kinetic energy is when an object is in motion How I got my answer is really easy you simply just look at the answers and see which one says the object is in motion . Your answer would most likely be D
