Precipitate

When NaOH (aq) was added to an unknown sample, this was observed. Which cation is present?

• Cu²⁺

• Zn²⁺

• Fe²⁺

• Fe³⁺

Tags

NGSS.MS-PS1-2

A solid made when 2 liquids

are combined spelled correctly is:

• Precipitate

• Preciptate

• Presipitate

• Precipitete

What is the definition of percipitate?

• A solid that forms in a solution during a chemical reaction.

• A substance that evaporates from a solution during a chemical reaction.

• A liquid that forms in a solution during a chemical reaction.

• A gas that forms in a solution during a chemical reaction.

Tags

NGSS.MS-PS1-2

How can you determine if a percipitate has formed in a solution?

• Observe the formation of a solid or cloudy substance at the bottom of the solution.

• Heat the solution and observe any color change.

• Measure the pH of the solution.

• Add more solvent to the solution and observe any change in volume.

Tags

NGSS.MS-PS1-2

What is the role of a percipitate in a chemical reaction?

• The role of a precipitate in a chemical reaction is to neutralize the reactants.

• The role of a precipitate in a chemical reaction is to indicate that a reaction has occurred and to remove the products from the solution.

• The role of a precipitate in a chemical reaction is to change the color of the solution.

• The role of a precipitate in a chemical reaction is to speed up the reaction process.

When minerals carried by surface water into oceans precipitate out they form solid rocks such as Calcite and _____________ .

• Shale

• Quartz

• Basalt

• Limestone

Tags

NGSS.MS-ESS2-1

Dissolved minerals are carried in surface water (streams and rivers) to the ocean. Precipitates out as minerals. Shells settle to ocean floor when they die, mix with precipitates, and eventually form limestone.

• Precipitation of minerals

• Weathering and dissolution

• Burial and subduction

• Volcanic eruptions

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

Mixing Fe(NO₃)_{2 (aq)} and Na₂CO_{3 (aq)} causes an orange precipitate to form. What is the chemical formula of the precipitate?

• Fe(NO₃)_{2 (s)}

• FeCO_{3 (s)}

• NaNO_{3 (s)}

• Na₂(NO₃)_{2 (s)}

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

What is a precipitate in a chemical reaction?

• A solid that forms in a solution during a chemical reaction.

• A gas that forms in a solution during a chemical reaction.

• A liquid that forms in a solution during a chemical reaction.

• A substance that dissolves in a solution during a chemical reaction.

Tags

NGSS.MS-PS1-2

Which of the following is an example of a precipitate forming in a chemical reaction?

• Mixing vinegar and baking soda to produce carbon dioxide gas.

• Mixing silver nitrate and sodium chloride to form silver chloride.

• Dissolving sugar in water to form a solution.

• Boiling water to produce steam.

Tags

NGSS.MS-PS1-2