Exploring Acids and Bases

What happens when an acid and a base mix?

• An acid and a base explode upon mixing.

• They create a gas that fills the room.

• The mixture turns into a solid immediately.

• An acid and a base neutralize each other, forming water and a salt.

Name a property of acids.

• Acids are always colorless.

• Acids are always solid at room temperature.

• Acids have a sweet taste.

• Acids have a sour taste.

Name a property of bases.

• Bases turn blue litmus paper red.

• Bases have a sour taste.

• Bases are always solid at room temperature.

• Bases turn red litmus paper blue.

What is the pH scale used for?

• The pH scale is used to measure the acidity or alkalinity of a solution.

• To assess the viscosity of a solution.

• To determine the color of a solution.

• To measure the temperature of a solution.

What is a common use of vinegar, which is an acid?

• Making soap

• Cooking and food preservation

• Deodorizing carpets

• Cleaning windows

How do bases feel to the touch?

• Bases feel warm and sticky to the touch.

• Bases feel rough and gritty to the touch.

• Bases feel slippery or soapy to the touch.

• Bases feel dry and powdery to the touch.

What is one use of baking soda, a base?

• Cleaning agent for surfaces

• Preservative for fruits

• Ingredient in toothpaste

• Leavening agent in baking

What color does litmus paper turn in an acid?

• Red

• Blue

• Green

• Yellow

What color does litmus paper turn in a base?

• Red

• Green

• Blue

• Yellow

What is hydrochloric acid used for in the stomach?

• Hydrochloric acid aids digestion and protects against pathogens.

• Hydrochloric acid helps absorb vitamins directly.

• Hydrochloric acid is a source of energy for the body.

• Hydrochloric acid is used to neutralize bile.