Double replacement and solubility rules
Grade 10 Science Worksheet - Challenge Me
Circle the best answer, or write your answer on the line.
In FeCl₃ + 3 NaOH → Fe(OH)₃ + 3 NaCl, 2 units of Fe(OH)₃ form. How many spectator ions, Na⁺ and Cl⁻ together, stay dissolved, Ari?
In FeCl₃ + 3 NaOH → Fe(OH)₃ + 3 NaCl, 5 units of Fe(OH)₃ form. How many spectator ions, Na⁺ and Cl⁻ together, stay dissolved, Bo?
In FeCl₃ + 3 NaOH → Fe(OH)₃ + 3 NaCl, 4 units of Fe(OH)₃ form. How many spectator ions, Na⁺ and Cl⁻ together, stay dissolved, Esme?
Which net ionic equation fits AgNO₃ + NaCl → AgCl + NaNO₃, Jun?
- Na⁺ + NO₃⁻ → NaNO₃
- Ag⁺ + NO₃⁻ → AgNO₃
- Ag⁺ + Cl⁻ → AgCl
Which ions are spectators in CaCl₂ + Na₂CO₃ → CaCO₃ + 2 NaCl, Kira?
- Ca²⁺ and Cl⁻
- Ca²⁺ and CO₃²⁻
- Na⁺ and Cl⁻
Which net ionic equation fits the blue precipitate from copper(II) sulfate and sodium hydroxide, Luz?
- Cu²⁺ + 2 OH⁻ → Cu(OH)₂
- Cu²⁺ + OH⁻ → CuOH
- 2 Na⁺ + SO₄²⁻ → Na₂SO₄
Noah says Na₂CO₃ won't dissolve because carbonates are insoluble. Agree or disagree?
- Disagree: group 1 carbonates dissolve
- Agree: sodium compounds sink in water
- Agree: the carbonate rule has no exceptions
Pia says a solid forms whenever two salt solutions meet. Agree or disagree?
- Agree: swapping partners makes a solid
- Disagree: a product must be insoluble
- Agree: ions can't stay in solution
Which pair of solutions forms white CaCO₃ when they meet, Ren?
- NaCl and Na₂CO₃
- CaCl₂ and NaNO₃
- CaCl₂ and Na₂CO₃
Which pair of solutions forms no precipitate when they meet, Tala?
- CaCl₂ and K₂CO₃
- AgNO₃ and KCl
- KCl and NaNO₃