2.1. Elements, compounds and mixtures
A subsection of Chemistry, 0620, through 2. Atoms, elements and compounds
Listing 10 of 10 questions
Choose from the list of compounds below to answer the following questions. aluminium oxide calcium carbonate calcium oxide copper(sulfate hydrogen chloride potassium bromide sodium chloride sodium hydroxide Each compound can be used once, more than once or not at all. Which compound: reacts with aqueous ammonia to form a light blue precipitate, is formed by the decomposition of limestone, forms an acidic solution when dissolved in water, when electrolysed, gives a red-brown vapour at the anode, is an oxide of a metal in Group III of the Periodic Table, is a transition element compound? Complete the following sentences about compounds using words from the list below. chemically different fi xed mixed physically similar A compound is a substance which consists of two or more different elements combined together. The properties of a compound are from those of the elements from which it is formed. In a compound, the elements are combined in proportions.
0620_s14_qp_23
THEORY
2014
Paper 2, Variant 3
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Questions Discovered
10