Hydrates and Their Properties

Hydrates and Their Properties

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

Mrs. T reviews percent composition of hydrates, focusing on copper sulfate pentahydrate. She explains how to calculate the gram formula mass and percentage of water in hydrates using formulas and sample problems. The video also covers experimental methods using a crucible to determine water content in hydrates. Students are encouraged to pause, rewind, and ask questions for better understanding.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main topic of the video presented by Mrs. T?

Percent composition of hydrates

Chemical reactions

Periodic table trends

Atomic structure

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the prefix 'Penta' indicate in the formula of a hydrate?

Six water molecules

Three water molecules

Five water molecules

Four water molecules

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the gram formula mass of a hydrate calculated?

By adding the masses of all elements in the compound

By multiplying the mass of water by the number of molecules

By subtracting the mass of water from the total mass

By dividing the total mass by the number of elements

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the percentage of water in copper sulfate pentahydrate?

50%

32%

36%

45%

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a sample problem, what is the percentage of water if 0.8 grams of water is present in a 2.5 grams sample?

32%

45%

36%

28%

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of using a crucible in hydrate experiments?

To dissolve the hydrate

To contain the hydrate during heating

To measure the volume of the hydrate

To observe color changes

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the color of a hydrate when it is heated and becomes anhydrous?

It becomes more vibrant

It turns grayish or loses color

It becomes transparent

It turns black

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