Acids and bases

Front

Litmus paper can be used to determine the _______ of a substance.

Back

relative pH

Front

Which of the following statements is correct? Options: Blue litmus paper turns red when placed in a base., Red litmus paper turns blue when placed in a base., Blue litmus paper stays blue when placed in an acid., Red litmus paper stays red when placed in a base.

Back

Red litmus paper turns blue when placed in a base.

Tags

NGSS.MS-PS1-2

Front

The pH of a solution is tested, and it is found to be a basic solution. What could the pH have been? Options: 3, 9, 7, 5

Back

9

Front

Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood? Options: strongly acidic, slightly acidic, strongly basic, slightly basic

Back

slightly basic

Front

When using pH paper, the pH of a solution can be determined by looking at the _______ of the paper.

Back

color

Front

Pure water has a pH of 7. Pure water _______ (Options: is a base, is a neutral substance, could be either an acid or a base, is an acid)

Back

is a neutral substance

Front

Ammonia has a pH of 12. Ammonia is __________.

Back

a base

Front

What is true about the taste of bases?

Back

they taste bitter

Front

When dissolved in water, bases produce:

Back

hydroxide ions

Front

Which of these solutions is an acid? Options: Dish Soap: pH of 12, Tomato Soup: pH of 4, Baking Soda: pH of 9, Drain Cleaner: pH of 14

Back

Tomato Soup: pH of 4