What is a precipitate?

A substance dissolved in a solvent.

A solid formed from a chemical reaction in a solution.

A gas released during a reaction.

What happens when a precipitate forms in a solution?

The precipitate settles at the bottom.

The pH of the solution decreases.

Which of the following is an example of a precipitate?

Calcium carbonate formed from calcium chloride and sodium carbonate.

Oxygen gas released from hydrogen peroxide.

How does the concentration of reactants affect precipitation?

Higher concentrations speed up precipitation.

Lower concentrations speed up precipitation.

Concentration does not affect precipitation.

Concentration changes the color of the precipitate.

Why is it important to filter precipitates from solutions?

To isolate and collect the precipitate.

To change the color of the solution.

What role does stirring play in precipitate formation?

It changes the color of the solution.

It increases the pH of the solution.

Which chemical reaction typically forms a colored precipitate?

Sodium chloride and silver nitrate.

Potassium iodide and lead nitrate.

Sodium carbonate and calcium chloride.

Iron sulfate and sodium hydroxide.

How does temperature affect precipitation reactions?

Lower temperatures speed up precipitation.

Higher temperatures speed up precipitation.

Temperature has no effect on precipitation.

Temperature changes the color of the precipitate.

What is the primary purpose of adding a precipitating agent in a solution?

To decrease solubility of reactants.

To change the pH of the solution.

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