Which elements has the same chemical and physical properties the one in the same period or the one the same group?

Gretta has a sample of soil. sh wants to know what its porosity is. How could she test the soil's porosity

What is the common name of H2O

Are elements always transparent

How many molecules of sulfur trioxide are in 78.0 grams? (A) 7.33 x 10^23 (B) 5.87 x 10^23 (C) 3.76 x 10^27 (D) 0.974 (E) none of the above

Which is an example of mechanical weathering? A. Carbonic acid reacting with minerals in a rock B. An iron-containing rock becoming rusty at its surface C. Small rocks and pebbles falling down a slope D.

Can the groups of the periodic table be numbered in two different ways

Zn (s), Zn (NO3) 2 (0.30 M) || Ag (s), AgNO3 (0.010 M) 1. Draw the schematic of the electrochemical cell that you created including all the components (metals, solutions, salt bridges, voltmeters, etc.) in this portion of the experiment.

What change occurs in the atoms as we move down each chemical family?

3. The density of mercury is 13.6 g/ml. Find the volume of 150 g

scientist have found many marine fossils on the mountain far from any ocean or sea what is the best explanation for these fossils