Which list includes elements with the most similar chemical properties? 1. Br, Ga, Hg 2. Cr, Pb, Xe 3. O, S, Se 4. N, O, F

Normally, in the process of osmosis, the net flow of water molecules into or out of the cell depends upon difference in the

Which change is exothermic? Rain becomes sleet when the temperature falls below 0°C. Icebergs shrink as global temperatures rise. Solid water turns to liquid water as energy is added.

Which does a meandering stream look like? A. V-shape B. S-shape C. Y-shape D. U-shape

A positively charged ion will bond with

Which scenario best describes a chemical change? A. water conducting electricity B. copper pipe being cut into pieces C. copper corroding in the presence of oxygen D. water freezing into ice

What property of the elements is considered when arranging the elements in the periodic table?

How is Bohr's atomic model different from Rutherford's model?

How many atoms are in 4.00 moles of helium?

Water molecules are polar with ends that exhibit partial positive and negative charges. such opposite charges make water molecules attract each other through which type of bonds?

How many atoms are in phosphorus