Acids in daily life
What taste do foods that contain acid usually have?
Sour, sharp, or tangy.
Name one strong acid commonly found in a lab.
Hydrochloric acid, sulfuric acid, or nitric acid.
What safety equipment should you always wear when handling acids or alkalis?
Safety glasses (eye protection).
What do indicators do?
They change color to show if a substance is an acid or an alkali.
What does the corrosive symbol warn about?
A substance that can destroy living tissue and cause burns.
Which weak acid is found in lemons and limes?
Citric acid
What are two common alkalis used in the laboratory?
Sodium hydroxide, potassium hydroxide, or calcium hydroxide.
Why should you always stand while working with chemicals?
To avoid spills getting on you.
What color does red cabbage indicator turn in acids?
Red
What does the flammable hazard symbol indicate?
A substance that can catch fire easily.
What happens when you dilute an acid with water?
It becomes less dangerous, but still harmful.
What happens if a strong alkali touches your skin?
It dissolves your skin, feels soapy, and causes a chemical burn.
If you spill acid on your skin, what should you do immediately?
Wash the area with lots of water to dilute the acid.
How do universal indicators differ from simple indicators like red cabbage?
Universal indicator shows the strength (pH) of an acid or alkali, while simple indicators only show if something is an acid or an alkali.
Name one hazard symbol that warns about dangers to the environment.
The "Hazardous to the environment" symbol.
Name one acid found in the laboratory.
Hydrochloric acid, sulfuric acid, or nitric acid.
What is a common ingredient in cleaning products that makes them alkaline?
Sodium hydroxide.
How can you make a strong acid or alkali safer to handle?
By diluting it with water.
What is the name of the scale used to measure how strong an acid or alkali is?
The pH scale.
Which hazard symbol represents substances that can cause serious health problems?
The "Serious health hazard" symbol.