PH Scale Acids and Bases

Maya was conducting a chemistry experiment in her school lab. She noticed that a substance she used was releasing OH- ions into the solution. What type of substance was Maya likely using?

• Acid

• Base

• Neutral

Aiden, Benjamin, and Roman are conducting a science experiment to determine the acidity of various household items. They have narrowed down their options to Baking Soda, Lemon Juice, Black Coffee, and Milk. According to their findings, which item is the most acidic?

• Baking Soda

• Lemon Juice

• Black Coffee

• Milk

Benjamin, Avery, and Hannah are conducting a science experiment in their school lab. They are using bleach, which is a strong base. Can you tell them what the pH level of bleach is?

• 13

• 7

• 1

• 2

During a biology class, Nora, Ethan, and Mason were discussing the pH level of human blood. They learned that it falls between 7.35 and 7.45. Based on this information, how would you best describe human blood?

• strongly acidic

• slightly acidic

• strongly basic

• slightly basic

Tags

NGSS.HS-LS1-3

Henry and Maya were doing a chemistry experiment. They mixed a chemical with water and it produced an H₃O. Benjamin asked them, what type of chemical did they use?

• Acid

• Base

Emma and Abigail are conducting a chemistry experiment. They want to produce an (OH) ion in their solution. Which chemical should they mix with water to achieve this?

• Acid

• Base

During a science experiment, Jackson, Oliver, and Roman were testing the acidity of different substances. They came across the term 'pH'. In this context, pH stands for:

• Potency of hydrogen

• Plurality of hydrogen

• Potential of hydrogen

• Pleurisy of hydrogen

Benjamin, Evelyn, and Kai are working on a science project. They found an unknown substance in a beaker in their school lab. They want to determine the relative pH of the unknown substance. Benjamin places a piece of blue litmus paper into the substance, and the litmus paper stays blue.
The substance in the beaker

• is a base.

• has a neutral pH.
  

• is an acid.

• there is not enough information here to give a definitive answer

Samuel was conducting a chemistry experiment in the lab. He had a few substances in front of him and he was wondering what would happen if he mixed an acid with one of them. Zoe suggested that acids react with

• water to produce bases and salts

• salts to produce bases and water

• neither bases, salts nor water

• bases to produce salts and water

Tags

NGSS.MS-PS1-5

Lemon has a pH2, therefore it is a/an _____

• Acid

• Base

• Neutral

• Click here for a wrong answer