A. Bases make the solution feel sticky
B. Bases make the solution feel slippery
C. Bases have no effect on the feel of the solution
D. It depends on the concentration of the base
For those aiming to excel in their ATI TEAS test and secure admission into their desired nursing program, ExamGates offers an invaluable resource. Our platform features practice questions meticulously crafted by tutors who have previously aced the exam themselves. With ExamGates, you can access content that is 100% relevant to the test, accompanied by vivid images and illustrations. Additionally, our platform provides comprehensive explanations for both correct and incorrect answers, empowering you to fully grasp the material and optimize your study efforts. Take the first step towards your nursing aspirations with ExamGates today.
Bases make the solution feel slippery or soapy to the touch. This is due to the formation of soap-like substances when bases react with fatty acids.
Therefore, the Correct Answer is B.
Which of the following is a characteristic property of bases?
A. Sour taste
B. Reaction with metals to release water
C. Turn phenolphthalein pink
D. Donate protons
The Correct Answer is C.One of the characteristic properties of bases is their ability to react with certain metals to release hydrogen gas. This reaction is not as common or vigorous as the reaction of acids with metals but is still a defining property of bases. An example of this reaction is the reaction between sodium hydroxide (\(NaOH\)) and aluminum (\(Al\)), which produces hydrogen gas (\(H_2\)).
How do bases affect the feel of the solution?
A. Bases make the solution feel sticky
B. Bases make the solution feel slippery
C. Bases have no effect on the feel of the solution
D. It depends on the concentration of the base
The Correct Answer is B.Bases make the solution feel slippery or soapy to the touch. This is due to the formation of soap-like substances when bases react with fatty acids.
Which of the following properties is a characteristic of bases?
A. React with metals to release hydrogen gas
B. Turn litmus paper red
C. Have a sour taste
D. Conduct electricity in solution
The Correct Answer is D.Bases do not react with metals to release hydrogen gas. This property distinguishes them from acids, which do react with metals to produce hydrogen gas.
Which of the following statements about the pH of bases is correct?
A. Bases have a pH greater than 7
B. Bases have a pH equal to 7
C. Bases have a pH less than 7
D. Bases have a pH of 7 and can vary based on concentration
The Correct Answer is A.Bases have a pH greater than 7 on the pH scale, indicating their alkaline nature. The pH of a base solution increases as the concentration of hydroxide ions (\(OH^-\)) increases.
How do bases affect the solubility of certain substances, such as fats and oils?
A. Bases decrease the solubility
B. Bases increase the solubility
C. Bases have no effect on solubility
D. It depends on the specific substance
The Correct Answer is B.Bases increase the solubility of certain substances like fats and oils. This property is utilized in the process of saponification, where bases (such as sodium hydroxide) react with fats to produce soap and glycerol.
What effect do bases have on indicators like litmus paper?
A. Turn it blue
B. Turn it red
C. Turn it green
D. No effect
The Correct Answer is A.Bases turn litmus paper blue. Litmus is a common indicator that changes color in response to the acidity or basicity of a solution. In the presence of a base, litmus paper turns blue.
Which of the following statements about the taste of bases is true?
A. Bases have a sweet taste
B. Bases have a bitter taste
C. Bases have a sour taste
D. Bases have no taste
The Correct Answer is B.Bases have a bitter taste. However, tasting chemicals is not safe and should never be done.
How do bases affect the electrical conductivity of a solution?
A. They decrease conductivity
B. They increase conductivity
C. They have no effect on conductivity
D. It depends on the concentration of the base
The Correct Answer is B.Bases increase the electrical conductivity of a solution. This is because bases ionize in water to produce hydroxide ions (\(OH^-\)), which carry an electric charge.
What is the effect of bases on the pH of a solution?
A. Bases increase the pH
B. Bases decrease the pH
C. Bases have no effect on the pH
D. It depends on the concentration of the base
The Correct Answer is A.Bases increase the pH of a solution. As bases ionize in water, they release hydroxide ions (\(OH^-\)), which react with \(H^+\) ions from water, thereby decreasing the concentration of \(H^+\) ions and increasing the pH.