what are the diatomic elements
hydrogen, oxygen, fluorine, bromine, iodine, nitrogen and chlorine
predict the products when potassium reacts with calcium oxide
potassium oxide and calcium
When a glowing splint is added to a test tube it re-ignites. what is present?
oxygen
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)
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)
what are the products when calcium hydroxide decomposes
calcium oxide and water
You add magnesium oxide with another reactant that turns cobalt (II) chloride pink. what are the products of this reaction
magnesium hydroxide
A positive burning splint test means:
hydrogen present
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)
When limewater is added to a beaker it doesn't turn milky. what does this mean?
no carbon dioxide present
what are the products when calcium chlorate decomposes
calcium chloride and oxygen
what are the products when calcium carbonate decomposes
calcium oxide and carbon dioxide
Balance the following reaction: __FeCl3 + __Be3(PO4)2 --> __BeCl2 + __FePO
2, 1, 3, 2
A cobalt (II) chloride strips turns pink this means what?
Water or water vapour is present
What does a chemical above the arrow represent
catalyst
what are the products when nitrogen and hydrogen combine
ammonia or nitrogen trihydride
What are the products between methane and oxygen
carbon dioxide and water
what are the products when lithium and nitrogen combine
lithium nitride
balance the following reaction below
2, 1, 1, 1
Write a chemical reaction based on the word equation below (predict the products)
Ca + MgO → CaO + Mg
what are the products when calcium hydroxide reacts with potassium bromide *assume reaction occurs
predict the products when magnesium reacts with calcium oxide
NR - Ca is higher than Mg on activity series