3. Place these elements in order from most reactive to least reactive: rubidium (Rb), neon (Ne), silicon (Si), calcium, (Ca)

When you perform this reaction, what could remain at the end of the reaction? check all that apply. excess reactant aqueous copper chloride excess reactant aluminum oxygen product solid copper carbon dioxide product aqueous aluminum chloride water

Which position represents spring in the southern hemisphere? a) b) c) d)

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.