17. SUMMARY: Based on this gizmo, the number of protons equals the The Atomic number
from the periodic table. The number of protons determines the
of an atom. The
and
determines the mass of an atom. The protons and neutrons are located in the
Nucleus
of an atom and electrons are in the
Outside of an nucleus

Seltzer water is created by placing water under pressure with carbon dioxide gas. which of the following statements best describe seltzer water: a. the solution will be slightly acidic b. the solution will be slightly basic. the solution will be strongly acidic. d. the solution will be strongly basic. e. the solution will be neutral

In which region is the substance in both the solid phase and the liquid phase? 1 2. 3 4 mark this and return save and exit next

Awhite powder is added to a solution. the images show observations made before the powder is added, just after the powder has been added, and a little while later. (the liquid in the small beaker is phenol red solution.) what evidence shows that a chemical change has taken place?