Strips of aluminum and lead will react with hydrochloric acid, but a silver strip will not. A reaction was observed when an Al strip was placed in solution of Pb(NO3)2 and AgNO3. No reaction was
observed when an Ag strip was placed in a Pb(NO3)2 solution. Arrange the metals and hydrogen in
a relative reactive series, listing the most reactive first.

When the volume and number of particles of a gas are constant which of the following is also constant

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic

Acertain atom has 22 protons and 19 electrons. this atom loses an electron. the net charge on the atom is now 4+1+01-4-. if this same atom with 22 protons and 19 electrons were to gain 3 electrons, the net charge on the atom would be 3+2+02-3-.