Naming Hydrates

Name the following hydrate:  NaCl * 5H₂O

• sodium chloride 

• sodium monochloride pentahydrate

• sodium chloride pentahydrate

• pentahydrate

Name the following ionic compound: MgSO₄*7H₂O

• magnesium sulfate * hexahydarte

• magnesium sulfate hexahydarte

• magnesium sulfate heptahydrate

• magnesium sulfate* heptahydrate

A student heated a blue copper sulfate crystal in a test tube. After a few minutes, she observed that the crystal turned white and the inside of the test tube was covered with a thin film of water. The water inside the test tube most likely __.

• was left from cleaning the test tube the night before

• condensed from the air around the test tube

• came from the blue copper sulfate crystal, which is a hydrate

• seeped through the sides of the test tube

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Compounds that are hydrates contain which of the following?

• water

• chlorine

• hydrogen chloride

• nitrogen

Tags

NGSS.HS-ESS2-5

• calcium chloride dihydrate

• calcium dichloride hydrate

• calcium chloride hydrate

• dicalcium chloride dihydrate

• copper(II) sulfate pentahydrate

• copper sulfate pentahydrate

• copper(II) sulfate hexahydrate

• copper sulfate hexahydrate

Which of the following is a characteristic of hydrates?

• They contain water molecules within their crystal structure.

• They are always liquid at room temperature.

• They do not contain any water.

• They are always colorless.

A hydrate is heated and loses mass. What is the most likely explanation?

• The water of hydration was lost.

• The compound decomposed into elements.

• The compound reacted with oxygen.

• The compound absorbed moisture from the air.

Tags

NGSS.HS-PS3-4

• iron(III) chloride hexahydrate

• iron chloride hexahydrate

• iron(III) chloride dihydrate

• iron chloride dihydrate

What happens to the water in a hydrate when it is heated?

• It is released as vapor.

• It turns into ice.

• It remains in the compound.

• It reacts with the compound.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4