law that states that matter can neither be created nor destroyed during a chemical reaction
Logo

Nursing Elites

HESI A2

Chemistry HESI A2 Quizlet

1. Which law states that matter can neither be created nor destroyed during a chemical reaction?

Correct answer: B

Rationale: The correct answer is B, the Law of Conservation of Mass. This law, formulated by Antoine Lavoisier, states that matter cannot be created or destroyed in a chemical reaction. It is a fundamental principle in chemistry that explains the preservation of mass during chemical reactions, indicating that the total mass of the reactants is equal to the total mass of the products. The other choices are incorrect because: A: The Law of Conservation of Energy states that energy cannot be created or destroyed, not matter. C: The Law of Constant Composition refers to compounds having the same composition by mass regardless of their source or how they were prepared, not about the conservation of matter in reactions. D: The Law of Multiple Proportions describes the ratios in which elements combine to form compounds, not the conservation of mass.

2. What statement from the article is correct?

Correct answer: B

Rationale: The correct answer is B. The passage clearly states that China developed chopsticks as an efficient tool for eating, making choice B the correct statement. Choice A is incorrect as chopsticks were not developed in Europe but in China. Choice C is not supported by the passage as it does not discuss the difficulty of eating with forks. Choice D is also incorrect as space travel introduced new challenges but did not eliminate the need for utensils.

3. Which word is not used correctly in the following sentence: 'After ringing up the nails, the cashier handed Nedra her receipt and change.'

Correct answer: C

Rationale: The word 'recipe' in the sentence should be 'receipt.' In this context, 'receipt' refers to a proof of payment, whereas 'recipe' is a set of instructions for preparing a dish. Therefore, 'receipt' is the correct word to use in the given sentence. Choice A, 'ringing,' is used correctly as it means the process of totaling the cost of the items. Choice B, 'cashier,' is also used correctly to refer to the person handling the transaction. Choice D, 'change,' is appropriately used to indicate the money returned after payment.

4. How many amino acids are essential for human life?

Correct answer: B

Rationale: There are 20 essential amino acids required for human life. These amino acids cannot be synthesized by the body and must be obtained through the diet. They play crucial roles in various physiological functions and are necessary for protein synthesis and overall health. Choice A is incorrect because there are not 22 essential amino acids. Choice C is incorrect as there are more than 18 essential amino acids. Choice D is incorrect as there are not 24 essential amino acids for human life.

5. What is the main component of blood plasma?

Correct answer: B

Rationale: The correct answer is B: Water. Blood plasma is composed mostly of water, which acts as a solvent for various nutrients and substances. Choices A, C, and D are incorrect. Proteins are indeed present in blood plasma but are not the main component. Red blood cells and platelets are cellular components of blood, not the main component of blood plasma.

Similar Questions

Which gland controls Calciferol?
Select the word that means 'open.'
Which of the following is not listed as a detail in the passage about microbes?
How many ounces are in 3 quarts?
Which of the following elements does not exist as a diatomic molecule?

Access More Features

HESI A2 Basic
$49/ 30 days

  • 3,000 Questions with answers
  • 30 days access

HESI A2 Premium
$99/ 90 days

  • Actual HESI A2 Questions
  • 3,000 questions with answers
  • 90 days access

Other Courses