Determine if the following half reactions are oxidation or reduction. 1. Al ⇒ Al3+ + 3e-
2. Cu2+ + 2e- ⇒ Cu
3. MnO4- + 5e- + 8H+ ⇒ Mn2+ + 4H2O
4. F2 ⇒ 2F- + 2e-

Pls! plant cells and animal cells were observed under a microscope. the characteristics of two cells are listed below. cell p: does not capture sunlight cell q: has cytoplasm but no chloroplast which statement about the two cells is correct? cell q also has a cell wall. cell q also has large vacuole. cell p also has a large vacuole. cell p also has a cell membrane.

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

Is a pencil falling to the floor anon contact force, a force, or a contact force