Active Metals Often React with Oxygen in Air to Form

question 62

Multiple Choice

Active metals often react with oxygen in air to form a protective surface film that prevents further reaction.Which one of the following formulas for a metal-oxygen combination is NOT correct?

• A)Al₂O₃
• B)Fe₂O₃
• C)Na₂O
• D)MgO₂
• E)MnO

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Definitions:

Normal Balance

The side (debit or credit) of an account that is usually increased. For example, assets have a normal debit balance, while liabilities have a normal credit balance.

Financial Statement

Documents that provide an overview of a company's financial condition, including balance sheet, income statement, and cash flow statement.

Permanent/Temporary

Refers to the classification of accounts or differences; permanent accounts are ongoing and not closed at the end of the accounting period, whereas temporary accounts are closed and reset.

Normal Balance

The side (debit or credit) of an account that is typically increased.