Which of the following atoms is most likely to become a cation?

A. Oxygen, atomic number 8

B. Fluorine, atomic number 19

C. Helium, atomic number 2

D. Fluorine, atomic number 9

Answer Explanation:

Fluorine has a high electronegativity, and therefore, it has a strong attraction for electrons and tends to gain electrons to form anions. Therefore, it is more likely to become a cation by losing an electron.

Therefore, the Correct Answer is D.

Q #1: The component of an atom that possesses relatively little mass, thus being negligible in calculating the atomic mass number, is the:

A. Electron

B. Quark

C. Neutron

D. Proton

Answer Explanation

Rationale

Electrons are subatomic particles that have relatively little mass and are negligible when calculating atomic mass. The atomic number is usually the sum of protons and neutrons in the nucleus of the atom.
Q #2: Which of the following endocrine organs in the diagram below is involved in regulating milk production following childbirth?

A. Pituitary gland

B. Thyroid gland

C. Adrenal glands

D. Ovaries

Answer Explanation

The pituitary gland produces prolactin, which regulates milk production
Q #3: In order to determine the effects of energy drinks on women's running speed, researchers gave 300 women an energy drink and then recorded the time it took each of them to run 2 miles. After collecting the results, researchers concluded that energy drinks increase the speed of running in Which of the following further tests would best help to support this conclusion?

A. Repeat the same experiment, using 300 men

B. Repeat the experiment giving half of the women water and the other half the energy drink

C. Repeat the experiment giving the women two different energy drinks

D. Repeat the experiment, having half of the women run 2 miles and the other half run 5 miles

Answer Explanation

Conducting the experiment with half the women taking water and the other half taking an energy drink creates a study and experimental group, which can allow for comparison and conclusion. The researchers can compare the effects of the energy drink directly with a baseline, and this helps to establish a cause-and-effect relationship and provides stronger evidence to support their conclusion.

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Which of the following atoms is most likely to become a cation?

More Questions on TEAS 7 Science

Q #1: The component of an atom that possesses relatively little mass, thus being negligible in calculating the atomic mass number, is the:

Answer Explanation

Q #2: Which of the following endocrine organs in the diagram below is involved in regulating milk production following childbirth?

Answer Explanation

Answer Explanation

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