Which of these is a property of bases?
Responses
They turn litmus paper blue.
They turn litmus paper blue.
They taste sour.
They taste sour.
They produce hydrogen gas when reacted with metals.
They produce hydrogen gas when reacted with metals.
They feel sticky.
They turn litmus paper blue.
An unknown solution has a pH of 8. How would you classify this solution?
Responses
There is not enough information to answer the question.
There is not enough information to answer the question.
basic
basic
acidic
acidic
neutral
basic
Which of these is a base?
Responses
vinegar
vinegar
HCl
uppercase H C lowercase l
HNO3
uppercase H N O subscript 3
ammonia
ammonia
A high concentration of hydrogen ions means a solution is what?
Responses
neutral
neutral
very acidic
very acidic
very basic
very basic
neither acidic or basic
very acidic
What solution turns litmus paper blue?
Responses
neutral
neutral
none
none
basic
basic
acidic
acidic
basic
The property of bases from the given options is "They turn litmus paper blue".
Litmus paper is a commonly used indicator in chemistry to determine whether a substance is acidic or basic. It is usually red in its acidic form and blue in its basic form. So, when a base comes in contact with litmus paper, it turns the paper blue, indicating its basic nature.
To determine this property, you can perform a simple experiment. Take a piece of litmus paper and place a small amount of each substance (listed as options) on separate sections of the paper. Observe the color change of the litmus paper after a few seconds or minutes. If the litmus paper turns blue, it indicates that the substance is a base.
It is important to note that bases can have other properties as well, such as tasting bitter or feeling slippery, but these are not mentioned in the given options.