Chemical Indicators and pH Laboratory Safety Quiz

Why are protective goggles essential in a chemistry laboratory?

• They look cool
• They prevent chemical splashes from contacting eyes
• They are a fashion statement
• They block natural light

What is the normal pH range of human blood?

• 6.0-6.5
• 7.35-7.45
• 8.0-8.5
• 5.5-6.0

What is the primary purpose of chemical indicators?

• To change colors randomly
• To help understand solution properties
• To decorate laboratory equipment
• To measure temperature

What is the recommended action after handling chemicals?

• Leave hands unwashed
• Use hand sanitizer only
• Wash hands thoroughly
• Wear additional gloves

What is a potential pH level of acid rain?

• 7.0
• 8.5
• 4.0
• 2.5

When working in a laboratory, who should supervise chemical experiments?

• Other students
• No one
• An adult
• Younger siblings

What should you never do with chemical solutions?

• Measure them carefully
• Taste or directly touch them
• Wear protective gear
• Record observations

Why are gloves important in laboratory settings?

• They make hands look professional
• They protect skin from chemical contact
• They improve grip on equipment
• They increase hand temperature

Chemical indicators help scientists understand what about solutions?

• Their temperature
• Their color
• Their fundamental properties
• Their weight

What unique environment can have extreme pH levels?

• Rainforests
• Deep-sea hydrothermal vents
• Desert landscapes
• Mountain tops