Determine whether the following statement expresses either a necessary or sufficient condition. The presence of oxygen is a __ condition for starting a fire. Necessary Sufficient

ARD + SCIENCE QUESTIOM: what is the chemical formula of table salt? is left __

Lime stone mixed with hydrochloric acid. Conclusion linclude the name of the process and the major product(s)] This is a sublimation process, where Calcium carbonate sublimes when mixed with hydrochloric acid This is a combustion reaction, where Calcium carbonate reacts with hydrochloric acid to form carbon dioxide and water This is an acid base reaction, where Calcium carbonate (a base) reacts with hydrochloric acid forming salt (Calcium chloride), water and carbon dioxide (the gas that caused the fizzing) This is a dissolving process, where Calcium carbonate dissolves in hydrochloric acid

Which combination cannot form an compound? Cadmium ion and barium ion Aluminum ion and sulfite ion Calcium ion and oxide ion All are possible Barium ion and nitride ion

Lime stone mixed with hydrochloric acid. Is the process physical or chemical changes? What are your evidences? Physical change only, where lime stone is melting then evaporating Physical change only, where the lime stone is subliming Chemical change, as evidenced by gas formation Chemical change, as evidenced by the color change

Which polyatomic ion below has the lowest charge? hypochlorite carbonate ion No right answer phosphate ion sulfite ion

Which cation in the following ionic compounds have the highest charge? i.e., NaCl vs CaCl_(2)Na=+1vs.Ca=+2 so Ca has the highest charge. FeSO_(4) CoCO_(3) None, all have the same charge. Cu(OH)_(2) SnO_(2)

An atom has nine protons and ten electrons This makes it: Answer: A nonstoichiometric. B an ion. C a cathode ray. D an alpha particle. neutrally charged.

Part J Lime stone and hydrochloric acid. Hypothesis,What happen to lime stone (Calcium carbonate. when subjected to hydrochloric acid? (This question has zero credit, so don't worry if you got it wrong You just need to select the logical response that has good rationalization). This is an acid base'reaction, where Calcium carbonate (a base) reacts with hydrochloric acid forming salt (Calcium chloride), water and carbon dioxide (the gas that caused the fizzing) This is a sublimation process, where Calcium carbonate sublimes when mixed with hydrochloric acid This is a combustion reaction, where Calcium carbonate reacts with hydrochloric acid to form carbon dioxide and water This is a dissolving process, where Calcium carbonate dissolves in hydrochloric acid

Conclusion finclude the name of the process and the major product(s) This is an acid base reaction, where Aluminum will act as an acid while copper chloride acts as a base forming Aluminum chloride which is a salt and water.This is why Aluminum is dissolving. While metallic copper will form a solid. Hence the appearance of the dark red entity (metallic copper. This is single replacement reaction, where Aluminum will steal the chloride from the copper chloride forming Aluminum chloride which is soluble. This is why Aluminum is dissolving. While metallic copper will form a solid. Hence the appearance of the dark red entity (metallic copper). This is a rusting process where aluminum is getting rust on it from the water This is dissociation process (dissolving. where aluminum is dissolving and copper is precipitating