Counting Atoms 1

Counting Atoms 1

Assessment

Flashcard

Chemistry

8th Grade

Practice Problem

Hard

Created by

Wayground Content

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15 questions

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1.

FLASHCARD QUESTION

Front

How many O's are in Al₂(SO₄)₃?

Back

12

2.

FLASHCARD QUESTION

Front

Number of N in (NH₄)₂CrO₄?

Back

2

3.

FLASHCARD QUESTION

Front

How many Sodium (Na) are in 6NaCl?

Back

6

4.

FLASHCARD QUESTION

Front

What is a subscript in a chemical formula?

Back

A small number below an element symbol that tells the number of atoms of that element.

5.

FLASHCARD QUESTION

Front

What does the formula Al₂(SO₄)₃ represent?

Back

Aluminum sulfate, which contains aluminum, sulfur, and oxygen.

6.

FLASHCARD QUESTION

Front

How many total atoms are in Al₂(SO₄)₃?

Back

14 (2 Al, 3 S, 12 O).

7.

FLASHCARD QUESTION

Front

What is the significance of parentheses in chemical formulas?

Back

Parentheses indicate that the enclosed group of atoms is a polyatomic ion and the subscript outside applies to the entire group.

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