Acids and Bases in the House

During a science fair, students were comparing the pH levels of common household items to determine which one is the strongest base. Which of the following items did they find to be the strongest base?

• oven cleaner - 13.5

• lemon juice - 2.5

• soap - 10

• blood - 7.4

During a science fair, a group of students set up a booth to demonstrate the pH levels of common household items. Which item displayed at their booth is the weakest base?

• oven cleaner - 13.5

• lemon juice - 2.5

• soap - 10

• blood - 7.4

During a science fair, a group of students presented a project on acidity and pH levels. They displayed various substances to illustrate their point. Which of the following substances did they identify as the strongest acid?

• oven cleaner - 13.5

• lemon juice - 2.5

• soap - 10

• blood - 7.4

During a science fair, students were asked to identify the strongest base from the following items commonly found at home. Which one did they identify as the strongest base?

• soap - 10

• HCL - 0

• blood - 7.45

• soft drink - 3

During a science fair, students were comparing the acidity of various substances. Which of the following substances did they find to be the strongest acid?

• soap - 10

• HCL - 0

• blood - 7.45

• soft drink - 3

Imagine you're in a chemistry lab and you're given a mystery substance. Upon testing, you find the substance has the following characteristics:

It has a very bitter taste.

It feels slippery when you touch it.

When you dissolve it in water, it produces OH- ions.

Based on these observations, how would you classify this substance?

• acid

• base

• enzyme

• fatty acid

Imagine you're a chef preparing a recipe that requires slightly acidic milk. What might its pH value be?

• 6.5

• 7.8

• 4.2

• 12.2

Imagine you are conducting a science experiment in your kitchen. You have a beaker of vinegar, and you decide to test its acidity. You dip a piece of red litmus paper into the vinegar. According to what you've learned, the red litmus paper should turn blue.

• True

• False

During a science experiment, Sam observed that a substance turned blue litmus paper red. Based on this observation, can we infer that the substance is a base?

• True

• False

Imagine you're testing the water in a fish tank to ensure it's safe for your fish. If the water is perfectly suitable for most freshwater fish, what would the pH level be?

• 3

• 5

• 7

• 9

• 11

Tags

NGSS.MS-PS1-2