Counting Atoms

Counting Atoms

Assessment

Flashcard

Science

7th Grade

Practice Problem

Hard

Created by

Wayground Content

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15 questions

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1.

FLASHCARD QUESTION

Front

How many atoms of oxygen are in the compound 2Ca(OH)2?

Back

4

2.

FLASHCARD QUESTION

Front

What is the chemical formula for hydrogen fluoride?

Back

HF

3.

FLASHCARD QUESTION

Front

How many atoms of iron are in the compound Fe2O3?

Back

2

4.

FLASHCARD QUESTION

Front

Define a molecule.

Back

Two or more atoms held together by covalent bonds.

5.

FLASHCARD QUESTION

Front

How many atoms of carbon are in the compound C3H8?

Back

3

6.

FLASHCARD QUESTION

Front

What is the chemical formula for water?

Back

H2O

7.

FLASHCARD QUESTION

Front

How many total atoms are in the compound 2NaCl?

Back

4 (2 Na + 2 Cl)

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