You are burning a molecule in oxygen and one of the products is a black powdery substance. what reaction occurred. be specific.
incomplete combustion (soot produced)
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20
Write a chemical reaction based on the word equation below (predict the products)
Ca + MgO â CaO + Mg
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banana
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gift
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fairy
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thief
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15
what are the products when calcium hydroxide reacts with potassium bromide *assume reaction occurs
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15
Write a balanced chemical equation for the following description with states of matter: aqueous sodium hydroxide reacts with aqueous hydrogen chloride to form water and sodium chloride
NaOH(aq) + HCl --> NaCl(s) + H2O(l)
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15
what are the products when calcium hydroxide decomposes
calcium oxide and water
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10
balance the following reaction below
2, 1, 1, 1
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thief
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fairy
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gift
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baam
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eraser
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gold
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gift
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15
what are the products when nitrogen and hydrogen combine
ammonia or nitrogen trihydride
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15
what are the products when lithium and nitrogen combine
lithium nitride
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10
A cobalt (II) chloride strips turns pink this means what?
Water or water vapour is present
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20
Write a balanced chemical equation for the following description with states of matter: sodium metal reacts with chlorine gas to form sodium chloride
2Na(s) + Cl2(g) --> 2NaCl (s)
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boom
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shark
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lifesaver
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10
A positive burning splint test means:
hydrogen present
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15
predict the products when magnesium reacts with calcium oxide