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Nursing Elites

ATI TEAS 7

Chemistry

1. What is the difference between alpha decay and beta decay?

Correct answer: B

Rationale: Alpha decay releases a helium nucleus (2 protons, 2 neutrons), while beta decay releases an electron or positron. - Both processes alter the atomic structure and change the element's identity.

2. Which property of a substance describes its ability to conduct heat or electricity?

Correct answer: b

Rationale: Conductivity refers to a substance's ability to conduct heat or electricity

3. A guitar string vibrates at a fundamental frequency of 440 Hz. What is the frequency of the second harmonic (first overtone)?

Correct answer: C

Rationale: Harmonics have frequencies that are multiples of the fundamental frequency. The second harmonic has a frequency twice the fundamental, so it's 440 Hz * 2 = 880 Hz.

4. The K-capture process, a type of electron capture, involves the capture of an electron from which electron shell:

Correct answer: A

Rationale: The K-capture process involves the capture of an electron from the innermost electron shell, known as the K-shell. The K-shell is represented by the outermost s-orbital in an atom's electron configuration. When an electron from the K-shell is captured, it results in the transition of a proton to a neutron in the nucleus, thereby changing the atomic number of the element. Therefore, option A, 'The outermost s-orbital,' is the correct answer as it accurately describes the electron shell involved in the K-capture process.

5. Salts are formed by the reaction between:

Correct answer: B

Rationale: Salts are ionic compounds formed by the reaction of an acid and a base

6. A patient weighs 180 pounds. What is their weight in kilograms (1kg = 2.2lbs)?

Correct answer: C

Rationale: Divide the weight in pounds (180) by the conversion factor (2.2lbs/kg).

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