Chemistry Tests Quiz

What is the first step in conducting a flame test?

• Dip the wire loop into a solution of the sample.

• Light the Bunsen burner.

• Clean the wire loop by dipping it in hydrochloric acid and then heating it in the flame until it burns without any color.

• Observe the color of the flame and record the results.

Which color does lithium produce in a flame test?

• Red

• Yellow

• Crimson

• Green

What is the purpose of the flame test?

• To determine the pH of a substance

• To identify the presence of metal ions based on the color of the flame

• To measure the temperature of a flame

• To determine the boiling point of a substance

Which gas test involves a glowing splint?

• Oxygen

• Hydrogen

• Carbon dioxide

• Nitrogen

What is the result of the gas test for oxygen?

• The gas extinguishes a lit splint.

• The gas relights a glowing splint.

• The gas produces a 'pop' sound with a lit splint.

• The gas turns limewater milky.

Which color does copper produce in a flame test?

• Blue-green

• Lilac

• Orange-red

• Yellow

How is hydrogen gas tested?

• By bringing a lit splint near the gas, producing a 'pop' sound.

• By passing the gas through limewater, turning it milky.

• By observing the gas relight a glowing splint.

• By observing the gas extinguish a lit splint.

What does the gas test for carbon dioxide involve?

• Passing the gas over a flame and observing it flicker.

• Passing the gas through limewater and observing it turn milky.

• Bringing a glowing splint near the gas and observing it relight.

• Bringing a lit splint near the gas and listening for a 'pop' sound.

Which metal ion produces a lilac flame color?

• Sodium

• Potassium

• Calcium

• Barium

What safety precaution is essential when performing the flame test?

• Wearing gloves

• Using a fume hood

• Wearing safety goggles

• Wearing a lab coat