Portuguese activity, aimed at first-year high school students, explores the conjunctions. Conjunctions are one of the elements that act in textual cohesion! Are we going to analyze the various meaning relationships they establish? To do so, answer the questions that refer to the text on the phenolphthalein! Have you ever heard of her? This substance is used in police investigations! Learn more about it by reading the text and be sure to study conjunctions!
This Portuguese language activity is available for download in an editable Word template, ready to print in PDF and also the completed activity.
Download this Portuguese exercise at:
SCHOOL: DATE:
PROF: CLASS:
NAME:
Read:
Some spots are difficult to identify. If a blouse or shorts is dirty and there's no way of knowing if it's chocolate or dulce de leche, no one spends a lot of time trying to find out and will wash those clothes right away. Right?
But if the question is whether a stain is blood, the situation gets more complicated. Even more so if this is important in the investigation of a crime. Over time, the blood darkens and can even look like a chocolate stain. To find out what it is, just resorting to science.
There are some chemicals that can tell if a stain is blood or not. One such product is called phenolphthalein, a pH indicator. It reacts when in contact with substances of a basic character – such as blood, which is slightly basic – and turns a pink color. But if the substance is acidic or neutral, nothing happens.
Therefore, phenolphthalein does not only react with blood, but with any substance with a basic pH, such as washing powder, for example. To increase accuracy, the blood identification test – known as the Kastle-Meyer test – also has hydrogen peroxide in its composition. […]
Bruno Delecave. Available in: .
Question 1 - The highlighted word plays the function of conjunction in the excerpt:
a) “Some stains are difficult in”
b) “[…] the situation becomes more”
c) "She reacts When in contact with substances of a basic character […]"
d) “[…] any substance with a basic pH, like washing powder, for example.”
Question 2 - In the excerpt mentioned above, the conjunction expresses the idea of:
a) addition
b) time
c) condition
d) comparison
Question 3 - Point out the passage where the term "if" does not work as a conjunction:
a) "But if the question is whether a stain is blood […]"
b) “Even more if this is important in the investigation of a crime.”
c) "To find out what it is, just resorting to science."
d) "There are some chemicals capable of identifying whether a stain is blood or not."
Question 4 – In the second sentence of the text, the conjunction "or" indicates:
a) opposing facts.
b) facts that add up.
c) alternating facts.
d) facts that are justified.
Question 5 - In the part “Over time, the blood darkens and may even look like […]”, the conjunction “and” links independent prayers to each other. In this case, the conjunction is:
a) absolute
b) main
c) subordinate
d) coordinating
question 6 – In “But if the substance is acidic or neutral, nothing happens.”, the conjunction “but”:
a) expresses a caveat.
b) expresses a contrast.
c) expresses a compensation.
d) expresses an addition.
Question 7 – In the segment "Therefore, phenolphthalein does not only react with blood […]”, the underlined conjunction introduces:
a) a purpose
b) a conclusion
c) an explanation
d) a concession
Question 8 – In the fragment “[…] known as the Kastle-Meyer test […]”, the term “how” is:
a) a verb
b) an adverb
c) a conjunction
d) a preposition
Per Denyse Lage Fonseca – Graduated in Languages and specialist in distance education.
At answers are in the link above the header.
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