3rd form closure metal reactivity

Metals react with acids to form

• salt+ carbon dioxide

• salt + hydrogen

• Salt + oxygen

• Salt + metal oxide

Which of the following is a confirmatory test for the presence of hydrogen gas?

• Outs a lit splint with a pop

• Relights a glowing splint

• Turns blue litmus red

• Turns red litmus blue

Metals react with oxygen to form

• Metal + oxide

• Metal oxide

• Metal hydroxide

• Metal + oxygen

Sodium + sulphuric acid -> ____ + hydrogen

• Sodium chloride

• Sodium sulphate

• Sodium nitrate

• Sodium carbonate

Potassium + oxygen ->

• Potassium hydroxide

• Potassium oxide + hydrogen

• Potassium hydroxide + hydrogen

• Potassium oxide