Testing for Cations and Anions

What is a cation's charge?

• positive

• negative

• neutral

• depends on the element

Is potassium a cation or an anion?

• cation

• anion

What is the charge of iron (III)?

• +3

• +2

• +6

• +4

Is the ion ammonium a cation or an anion?

• cation

• anion

What is the cation charge of chromium (VI)?

• +6

• -6

• +24

• -24

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following is used to test for nitrate ions?

• Iron(II) sulphate solution, dilute sulphuric acid and concentrated sulphuric acid
• Hydrochloric acid and barium chloride solution
• Nitric acid and silver nitrate solution
• Sodium hydroxide solution

Which of the following reagent is used to test for ammonium ion?

• Potassium hexacyanoferrate(II) solution
• Potassium thiocyanate solution
• Potassium iodide solution
• Nessler reagent

What is the observation when potassium iodide solution is added to a lead(II) nitrate solution?

• No changes
• A white precipitate is formed
• A yellow precipitate is formed
• Effervescence is observed

When the number of electrons equals the number of protons the atom has what charge?

• sponge bob
• positive charge
• negative charge
• neutral charge

Tags

NGSS.HS-PS1-7

METALS are more likely to LOSE electrons, so they tend to form ...

• anions
• cations
• neutral atoms
• negative ions

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2