To understand the world we live in, we use mental models. what is the problem with mental models? (select all that apply)
•they are personal
•they are incomplete
•they are idiosyncratic
•they are untestable

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

Will give brainliest it is a lab from k12 here is the linkfor each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. type your answer here. (score for question 3: of 5 points) were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. type your answer here. (score for question 4: of 5 points) make a general statement about the reactivity of the metals in this experiment. type your answer here.

Why did southern business leaders want to increase the number of slaves