how elements are arranged in the periodic table

HESI A2

Chemistry HESI A2 Quizlet

1. How are elements arranged in the periodic table?

A. By their atomic mass
B. By their chemical properties
C. By their physical state
D. By their charge

Correct answer: B

Rationale: Elements are arranged in the periodic table based on their chemical properties, making choice B the correct answer. The periodic table is organized so that elements with similar chemical properties are grouped together in columns, known as groups or families. This arrangement allows for the identification of trends in the behavior of elements and predicting their properties based on their position in the table. Choices A, C, and D are incorrect because the periodic table primarily focuses on the chemical properties of elements, not solely on atomic mass, physical state, or charge.

2. How were white elephants regarded by the people of Siam?

A. If a village elder received a white elephant, the entire village shared in the supply of meat.
B. White elephants were highly prized as they were very hard workers in the cane fields.
C. The people of Siam vied for the honor of receiving the king's gift or a white elephant.
D. White elephants were a financial burden despite being considered sacred.

Correct answer: C

Rationale: The correct answer is C. In the culture of Siam, white elephants were highly regarded as sacred and receiving one as a gift from the king was considered an honor. It was a symbol of prestige and status to receive the king's gift of a white elephant. Option A is incorrect as white elephants were not used for meat supply. Option B is also incorrect as white elephants were not prized for their work but rather for their symbolic value. Option D is partially correct but does not capture the full significance of white elephants in Siam.

3. Why are boats more buoyant in salt water than in fresh water?

A. Salt decreases the mass of the boats.
B. Salt increases the volume of the water.
C. Salt affects the density of the boats.
D. Salt increases the density of the water.

Correct answer: D

Rationale: Salt increases the density of water, making saltwater more buoyant than freshwater. The higher density of saltwater provides more lift to a boat, enabling it to float more easily compared to in freshwater. Choice A is incorrect because salt does not affect the mass of the boats. Choice B is incorrect as salt does not increase the volume of water. Choice C is incorrect since salt affects the density of water, not the boats themselves. Therefore, the correct answer is that salt increases the density of the water, resulting in boats being more buoyant in salt water than in fresh water.

4. What is the meaning of exacerbate?

A. To lessen in intensity
B. To make worse
C. To neutralize
D. To control

Correct answer: B

Rationale: The correct answer is B: 'To make worse.' Exacerbate means to worsen or make a situation, condition, or problem more severe or intense, not to lessen it. Therefore, if something exacerbates a situation, it means it makes it worse. Choices A, C, and D are incorrect because exacerbate does not mean to lessen in intensity, neutralize, or control the situation, but rather to worsen it.

5. How many chickens are needed to produce 24 eggs in 24 hours if it takes 2 chickens to produce 6 eggs in 24 hours?

A. 8 chickens
B. 12 chickens
C. 18 chickens
D. 6 chickens

Correct answer: A

Rationale: To produce 24 eggs in 24 hours, 4 times the number of chickens needed to produce 6 eggs is required. Since it takes 2 chickens to produce 6 eggs, 8 chickens are needed to produce 24 eggs in the same time frame. Choice B, 12 chickens, is incorrect because it doesn't consider the proportionality between chickens and eggs. Choice C, 18 chickens, is incorrect as it overestimates the number of chickens needed. Choice D, 6 chickens, is incorrect as it doesn't account for the increased number of eggs required.