Which of the following statements is correct for the test for carbon dioxide?
It changes limewater from milky to colourless.
It changes limewater from colourless to pink.
It changes limewater from colourless to milky.
Which of the following statements is correct for the test for hydrogen gas?
It relights a glowing splint.
It gives a pop sound with a glowing splint.
It gives a pop sound with a lit splint.
Which of the following statements is correct for the test for oxygen gas?
It relights a burning splint.
It extinguishes a burning splint.
A flame test is used to identify metal ions. What type of wire is used in this test?
Aluminium.
Nichrome.
Nickel.
When carrying out a flame test, what colour Bunsen flame must be used?
Blue
Yellow/orange
Blue with a yellow tip
Which of the following statements about the flame colour of potassium ions is correct?
Potassium burns with a purple flame.
Potassium burns with a lilac flame.
Potassium burns with a blue flame.
Which of the following statements about the flame colours of metal ions is correct?
Copper burns with a blue-green flame.
Sodium burns with a brick red flame.
Lithium burns with a yellow-orange flame.