Convection works because of a fluid's mass changes as its temperature rises and falls.

True or False?

How can the periodic table be used to predict the behavior of elements?

In what way do investigations build scientific knowledge? the results of investigations lead to questions that cannot be tested. they reflect the opinions and social values of scientists, ensuring valid information. the results of investigations lead to new questions, which lead to new investigations. they are not influenced by the research of earlier scientists, so they are able to address gaps in understanding.i

If a particle has z = 25 and 23 electrons, what is its charge?