In the electronegativity periodic table down a place from left to right is it going to be the same as negative to positive And also for the right side from down to up is it going to be negative at down and postive at the top?

How have the greenhouse gasses increased from the year 2000 to 2018

What occurs when a cell engulfs large food particals

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt