ion test

Name the precipitate formed between Ba²⁺(aq) and 2 drops of sulfuric acid

• barium sulfate

• beryllium sulfate

• barium hydrogen sulfate

• barium hydroxide

Name the precipitate formed between Pb²⁺(aq) and 2 drops of ammonia solution

• lead ammonium

• lead sulfate

• lead hydroxide

• none of these

Which is correct for the reaction between Zn²⁺ and 2 drops of NaOH solution?

• Zn²⁺(aq) + 2OH^-(aq) → Zn(OH)₂(aq)

• Zn²⁺(aq) + OH^-(aq) → Zn(OH)₂(s)

• Zn²⁺(aq) + 2NaOH(aq) → Zn(OH)₂(s)

• Zn²⁺(aq) + 2OH^-(aq) → Zn(OH)₂(s)

Lithium Flame Test?

• crimson

• orange

• yellow

• green

Metal ion with a lilac flame

• Na⁺
• K⁺
• Na²⁺
• K²⁺

An atom becomes _______ when it loses electrons.

• Positive
• Negative
• Neutral
• Invinsible

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

An atom becomes _________ when it gains electrons.

• Positive
• Negative
• Neutral
• Invinsible

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Cations are...

• Positive

• Negative

• Neutral

• Purring

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

Flame colour for sodium ions

• Blue
• Red
• Green
• Yellow

Colour of precipitate when sodium hydroxide is added to a Calcium ion solution.

• White

• Red - brown

• Green

• Blue