when sodium hydroxide naoh reacts with hydrochloric acid hcl the resulting product is
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ATI TEAS 7

ati teas 7 science

1. When sodium hydroxide (NaOH) reacts with hydrochloric acid (HCl), the resulting product is:

Correct answer: A

Rationale: When sodium hydroxide (NaOH) reacts with hydrochloric acid (HCl), a neutralization reaction occurs. The products of this reaction are water (H2O) and a salt, which is sodium chloride (NaCl). The chemical equation for this reaction is: NaOH + HCl -> NaCl + H2O. Choice B is incorrect because chlorine gas and sodium oxide are not the products of this reaction. Choice C is incorrect as sodium metal and water are not the products formed in this neutralization reaction. Choice D is incorrect because a reaction does occur between NaOH and HCl, resulting in the formation of NaCl and H2O. Therefore, the correct answer is A: Hydrogen gas and sodium chloride (NaCl).

2. Which of the following words is a synonym for 'happy'?

Correct answer: B

Rationale: The correct answer is 'B: Joyful.' 'Joyful' is a synonym for 'happy' as both words convey feelings of pleasure, contentment, and delight. Choice 'A: Sad' is incorrect as it is an antonym of 'happy,' representing feelings of sorrow or unhappiness. 'Angry' in choice 'C' and 'Tired' in choice 'D' are also incorrect as they represent different emotional states and do not share the same meaning as 'happy.'

3. Which of the following is NOT a mechanism that can directly cause evolution by natural selection?

Correct answer: C

Rationale: A) Mutations in genes can introduce new genetic variations into a population, which can be acted upon by natural selection. B) Differential survival and reproduction based on traits is a key component of natural selection, as individuals with advantageous traits are more likely to survive and pass on their genes to the next generation. C) Inheritance of acquired characteristics, also known as Lamarckism, is not a mechanism of evolution by natural selection. Traits acquired during an individual's lifetime (such as strong muscles from working out) are not passed on to offspring. D) Competition for resources in an environment can drive natural selection by favoring individuals with traits that help them better compete for limited resources. Therefore, the correct answer is C) Inheritance of acquired characteristics (like strong muscles from working out), as it is not a mechanism that can directly cause evolution by natural selection.

4. Janine was so nervous that she was surprisingly graceless and awkward on stage. What is the meaning of the word 'graceless' as used in the sentence below?

Correct answer: C

Rationale: The word 'graceless' in this context means lacking elegance or poise. Janine's nervousness caused her to act awkwardly and without the elegance one would typically expect on stage. Choices A, B, and D are incorrect. 'Against fear,' 'Without religion,' and 'Full of caution' do not accurately capture the meaning of 'graceless' in the given sentence.

5. Which of the following examples is a simple sentence?

Correct answer: C

Rationale: The correct answer is sentence C because it is a simple sentence containing only one independent clause. It expresses a complete thought with a subject 'The man in the blue pin-striped suit and checked tie' and a predicate 'looked somewhat out of place at the party.' Choices A, B, and D are not simple sentences. Choice A is a dependent clause as it does not express a complete thought on its own. Choice B is a prepositional phrase and does not form a complete sentence. Choice D is a complex sentence with a dependent clause ('because of his checked tie') along with the independent clause.

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