what type of bond is in a salt
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ATI TEAS 7

ATI TEAS Practice Test Science

1. What type of bond is present in salt?

Correct answer: A

Rationale: The correct answer is 'Ionic.' Ionic bonds are formed in salts through the transfer of electrons between atoms, leading to the attraction between positively and negatively charged ions. This results in a stable ionic compound, such as common table salt (sodium chloride). Nonpolar covalent, polar covalent, and peptide bonds are not typically found in salts. Nonpolar covalent bonds involve the equal sharing of electrons, polar covalent bonds involve unequal sharing of electrons, and peptide bonds are specific to proteins, not salts.

2. What is the process by which one element changes into another through radioactive decay known as?

Correct answer: A

Rationale: The correct answer is A: Transmutation. Transmutation is the correct term to describe the process by which one element changes into another element through radioactive decay. In transmutation, the atomic structure of the element is altered, leading to a change in the element's identity. Choice B, Fission, refers to the splitting of a heavy nucleus into lighter nuclei. Choice C, Fusion, involves the merging of lighter nuclei to form a heavier nucleus. Choice D, Oxidation, is not related to the process of one element changing into another through radioactive decay.

3. Which type of blood vessel carries blood away from the heart?

Correct answer: B

Rationale: The correct answer is B: Artery. Arteries carry oxygen-rich blood away from the heart to various parts of the body. Veins, on the other hand, carry blood back to the heart. Capillaries are tiny blood vessels where oxygen and nutrients are exchanged with tissues. Venules are small veins that collect blood from capillaries, not from the heart, making them incorrect in this context.

4. What is the main function of red blood cells?

Correct answer: A

Rationale: The correct answer is A: Transport oxygen. Red blood cells are primarily responsible for carrying oxygen from the lungs to the tissues in the body. Hemoglobin, a protein found in red blood cells, binds to oxygen in the lungs and releases it to cells throughout the body. This oxygen transport is essential for cellular respiration and energy production in the body. Red blood cells do not regulate blood pressure or heart rate; their main role is oxygen transport. Choices B, C, and D are incorrect because red blood cells do not transport carbon dioxide, regulate blood pressure, or regulate heart rate. These functions are primarily carried out by other components of the circulatory and regulatory systems.

5. Which of the following joints allows for side-to-side bending movements?

Correct answer: C

Rationale: The correct answer is C, Gliding joint. Gliding joints allow for side-to-side bending movements. These joints are found between the small bones of the wrist and ankle, allowing for flexibility and movement in multiple directions. Hinge joints (A) enable movement in one plane, akin to a door hinge. Ball-and-socket joints (B) allow for a wide range of motion across multiple directions. Saddle joints (D) facilitate movement in two planes.

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