Counting Atoms

Counting Atoms

Assessment

Flashcard

Chemistry

8th Grade

Hard

Created by

Wayground Content

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the chemical formula for water?

Back

H₂O

2.

FLASHCARD QUESTION

Front

How many atoms of hydrogen are in one molecule of water (H₂O)?

Back

2

3.

FLASHCARD QUESTION

Front

What is the significance of subscripts in a chemical formula?

Back

Subscripts indicate the number of atoms of each element in a molecule.

4.

FLASHCARD QUESTION

Front

How do you calculate the total number of atoms in a compound?

Back

Add the number of atoms of each element, considering their subscripts.

5.

FLASHCARD QUESTION

Front

In the compound Al₂(SO₄)₃, how many sulfur (S) atoms are present?

Back

3

6.

FLASHCARD QUESTION

Front

What is the total number of oxygen atoms in the compound Al₂(SO₄)₃?

Back

12 (4 oxygen atoms per sulfate group, and there are 3 sulfate groups).

7.

FLASHCARD QUESTION

Front

How many chlorine (Cl) atoms are in the compound CaCl₂?

Back

2

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