Flame Tests

Which option best describe test for hydrogen gas?

• Lighted splint; there will be a squeaky pop sound

• Glowing splint, there will be a squeaky pop sound

• Burning splint, there will be a squeaky pop sound

• Litmus paper, hydrogen gas will turn red litmus paper blue

Which option best describes the test for presence of oxygen?

• Lighted splint; flame will be extinguished

• Burning splint, flame will be extinghuished

• Glowing splint; gas will relight glowing splint

• Glowing splint, gas will extinguish the flame

Which option best describe the test for carbon dioxide gas?

• Lighted splint; flame will be extinguished

• Burning splint, flame will spread

• Direct gas into calcium hydroxide; calcium hydroxide turns cloudy

• Direct gas into lemonwater; lemonwater turns cloudy

Tags

NGSS.MS-PS1-2

Describe the accurate result for a flame test on Lithium ion.

• Flame colour: Red

• Flame colour: Yellow

• Flame colour: Lilac

• Flame colour: Blue green

Describe the accurate result for a flame test on sodium ion.

• Flame colour: Red

• Flame colour: Yellow

• Flame colour: Lilac

• Flame colour: Blue green

Which option describes the result for flame test on potassium ion?

• Flame colour: Red

• Flame colour: Yellow

• Flame colour: Lilac

• Flame colour: Blue green

Which result best describes flame test result on copper (II) ion?

• Flame colour: Yellow

• Flame colour: Red

• Flame colour: Lilac

• Flame colour: Blue green

The color of light which has the longest wavelength is

• red

• orange

• green

• purple

Tags

NGSS.HS-PS4-1

A purple color of light was seen when this element was heated in the flame.

• sodium

• barium

• potassium

• copper

Tags

NGSS.HS-PS4-3

A crimson flame in a flame test is

• Lithium

• Sodium

• Potassium

• Calcium