Portuguese activity, focused on ninth grade students, addresses the conjunctions. Are we going to analyze the relationships of meaning expressed by them? To do so, answer the various questions that explore the conjunctions, present in the curious text Why doesn't gold rust?
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Before answering about gold, let's think a little bit about what rusting is. As the name says, rust is something that happens to iron. When iron is exposed to air in the presence of water, it undergoes a transformation, a chemical reaction that produces something that wasn't there before: the rust or iron oxide, that orange material that forms on top of the iron.
If you leave a wet steel wool in the sink, it will quickly turn brown. Rust is a compound that contains oxygen and iron. When we talk about other metals reacting with oxygen and forming oxides, we don't use the term rust, but oxidize.
You may have noticed copper coins that, after a while, turn dark. This is because copper oxidizes. If you put some vinegar or lemon juice on the coin, the acid will dissolve the copper oxide and the coin will look shiny as new. We can put the metals in a row, in order of how easily they have to oxidize.
Some metals oxidize easily, such as zinc and iron. Others like copper and silver take much longer to oxidize. The more difficult a metal is to react with, for example, oxygen in the air, the more noble that metal is. It's a thing of the nobility, of not wanting to mix with other commoners… Gold is one of the most popular metals. nobles, at the very end of the line, so much so that, under normal conditions, it doesn't react with oxygen and so it doesn't oxidizes. Therefore, we find gold in nature as a metal, without being linked to other elements.
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Question 1 - There is a conjunction in the excerpt:
( ) “[…] let's think a little about what rusting is.”
( ) “[…] we do not use the term to rust, but to oxidize.”
( ) “Gold is one of the noblest metals, right at the end of the line […]”
Question 2 - In the "When iron is exposed to air in the presence of water, it undergoes a transformation […]”, the underlined conjunction indicates:
( ) cause
( ) time
( ) consequence
Question 3 - The "if" is a conjunction in the passage:
( ) “If you leave a wet steel wool in the sink […]”
( ) "Others like copper and silver take much longer to oxidize."
( ) “It's a thing of the nobility, of not wanting to mix with other commoners…”
Question 4 - In the passage marked above, the conjunction "if" expresses:
( ) a wish
( ) a condition
( ) an assumption
Question 5 - In “[…] other metals reacting with oxygen and forming oxides […]”, “and” is:
( ) an additive conjunction
( ) an explanatory conjunction
( ) an adversative conjunction
Question 6 – In the period "This happens because copper oxidizes.", the conjunction "because" could be replaced by:
( ) "because"
( ) "like"
( ) "for what"
Question 7 – The term "how" is a conjunction that indicates a comparison in the sentence:
( ) "As the name says, rust is something that happens to iron."
( ) “[…] the acid will dissolve the copper oxide and the coin will be shiny as new.”
( ) "Others like copper and silver take much longer to oxidize."
Question 8 – In the fragment “If you put some vinegar or lemon juice on the coin […]”, the conjunction “or” links:
( ) facts that add up.
( ) alternating facts.
( ) contrasting facts.
Question 9 – In the period "That is why, we find gold in nature as a metal, without being linked to other elements.”, the underlined conjunction introduces:
( ) a purpose
( ) a conclusion
( ) a proportion
Per Denyse Lage Fonseca – Graduated in Languages and specialist in distance education.
At answers are in the link above the header.