Counting Atoms

Counting Atoms

Assessment

Flashcard

Chemistry

7th - 8th Grade

Practice Problem

Hard

Created by

Wayground Content

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a subscript in a chemical formula?

Back

A small number below an element symbol that indicates the number of atoms of that element in a molecule.

2.

FLASHCARD QUESTION

Front

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

Back

2

3.

FLASHCARD QUESTION

Front

What does the formula C₆H₁₂O₆ represent?

Back

A molecule containing 3 different elements: Carbon (C), Hydrogen (H), and Oxygen (O).

4.

FLASHCARD QUESTION

Front

How many Oxygen atoms are in the compound Al₂(SO₄)₃?

Back

12

5.

FLASHCARD QUESTION

Front

What is the product of the reaction 2H₂ + O₂ -> ?

Back

2H₂O

6.

FLASHCARD QUESTION

Front

What does the coefficient in a chemical equation represent?

Back

The number of molecules or moles of a substance involved in the reaction.

7.

FLASHCARD QUESTION

Front

In the formula H₂O, what does the '2' represent?

Back

It indicates there are 2 Hydrogen atoms in one molecule of water.

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