Kathy is trying to conduct an experiment she wants an element that is very reactive, which of these should she use?

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

Connect the whole numbers on the periodic table to indicate what they represent?

Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth