Unit 11 Test 2024

When baking soda is mixed with vinegar, a reaction occurs. What is primarily produced during this reaction?

• A toxic gas is released.

• A salt and water are produced, along with carbon dioxide gas.

• The mixture turns into a strong acid.

• No reaction takes place.

Sandy used litmus paper to determine the pH of an unknown liquid. The blue litmus paper turned red but there was no change in the color of the red litmus paper. The liquid she tested is probably

• a base.
• neutral.
• an acid.
• of pH 7

Which material is MOST susceptible to deterioration from acid rain?

• Plastic

• Glass

• Limestone

• Steel

Gardeners often face challenges with soil pH levels. If your garden's soil tests reveal a pH level of 4.0, indicating high acidity, which of the following would be the most effective method to adjust the pH to a more neutral state suitable for a variety of plants?

• Increase watering intervals to dilute soil acidity.

• Incorporate sulfur to further decrease the pH.

• Mix in organic compost to gradually adjust the pH.

• Apply garden lime to raise the pH to a more neutral level.

Which substance is commonly used to neutralize stomach acid, characterized by a high pH value?

• Hydrochloric acid

• Sodium chloride

• Magnesium hydroxide

• Acetic acid

What term describes a solution with a pH less than 7, indicating it has more hydrogen ions than hydroxide ions?

• Neutral

• Acidic

• Basic

• Alkaline

What is the primary use of milk of magnesia (a base) in medicinal purposes?

• To treat acid reflux by neutralizing stomach acid.

• To increase acidity in the stomach for better digestion.

• To introduce beneficial bacteria into the gut.

• To decrease the absorption of nutrients in the stomach.

Which has a bitter taste?

• acids
• bases

What is the product called when an acid reacts with a base?

• Salt and water

• Water only

• A stronger acid

• A stronger base

Which of the following is not a base?

• baking soda

• ammonia

• lemon juice

• soap