Due to the electrons in their orbitals, sodium, potassium and calcium tend to lose electrons when bonding. When these bonds are dissolved in water, these particles become ________ particles called ________
positively charged: cations
negatively charged; cations
positively charged; anions
negatively charged; anions
The Correct Answer is A
A. positively charged; cations: Sodium (Na), potassium (K), and calcium (Ca) are metals that lose electrons, becoming positively charged ions, called cations.
B. negatively charged; cations: Cations are always positive. A negative ion is an anion.
C. positively charged; anions: The term anion refers to a negatively charged ion, not a positive one.
D. negatively charged; anions: These elements do not gain electrons-they lose them and do not become anions.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. it is a base and the hydrogen ion concentration increased: A base decreases H⁺ concentration by accepting H⁺ or releasing OH⁻.
B. it is an acid and the hydrogen ion concentration decreased: Acids increase H⁺ concentration, and a pH of 9.4 is basic, not acidic.
C. it is a base and the hydrogen ion concentration decreased: A pH of 9.4 is above 7, indicating a basic solution, and bases lower H⁺ concentration.
D. it is a buffer and the hydrogen ion concentration increased: A buffer resists changes in pH; it doesn't make pH jump to 9.4. Also, H⁺ would not increase in a basic environment.
Correct Answer is B
Explanation
A. Organization:
Refers to the structured arrangement of parts from chemical to system level, not interaction with the environment.
B. Responsiveness:
Responsiveness is the ability to sense changes in the environment and react appropriately to maintain balance (homeostasis).
C. Growth and Development:
Refers to increase in size and complexity over time, not directly about environmental interaction.
D. Metabolism:
Involves internal chemical reactions but not necessarily interaction with external stimuli.
E. Waste Disposal:
A bodily process to remove waste, not primarily about environmental response.
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