Calculating Mass of Compounds

Calculating Mass of Compounds

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial explains how to calculate the gram formula mass of compounds using the periodic table. It demonstrates the process with examples, including a zinc compound and calcium hydroxide. The tutorial covers the use of the periodic table to find molar masses, the calculation of compound masses, and the concept of hydrates. The instructor provides step-by-step guidance on multiplying atomic masses by their respective ratios and adding them to find the total mass of a compound.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in calculating the gram formula mass?

Find the volume of the compound.

Use the periodic table to find the mass of each element.

Calculate the number of moles directly.

Determine the density of the compound.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you use the periodic table to find the mass of an element?

By looking at the atomic number.

By calculating the element's density.

By finding the atomic mass listed.

By checking the element's group.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the mass of one mole of zinc according to the video?

60 grams

65 grams

70 grams

75 grams

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When calculating the mass of a compound, what should you do with the number of each type of atom?

Divide it by the atomic mass.

Ignore it.

Multiply it by the atomic mass.

Add it to the atomic mass.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the term 'hydrate' refer to in chemistry?

A compound with carbon molecules bonded to it.

A compound with oxygen molecules bonded to it.

A compound with extra hydrogen atoms.

A compound with water molecules bonded to it.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many grams is one water molecule equivalent to?

16 grams

18 grams

20 grams

22 grams

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the mass of two water molecules?

32 grams

34 grams

36 grams

38 grams

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