Chemical Equations and Reactions Test Review - Regular

In the equation above, how many atoms are in the oxygen molecule?

• 2
• 0
• 1
• 3

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NGSS.MS-PS1-1

A compound secreted by honeybees to paralyze intruders in their hive is known as 2-heptanone. The formula for this compound is shown. How many atoms of each element are in one molecule of 2-heptanone?

• 4 carbon atoms, 11 hydrogen atoms, and 1 oxygen atom
• 7 carbon atoms, 14 hydrogen atoms, and 1 oxygen atom
• 7 carbon atoms, 11 hydrogen atoms, and 8 oxygen atoms
• 6 carbon atoms, 14 hydrogen atoms, and 3 oxygen atoms

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NGSS.MS-PS1-1

The chemical formula represents the substance glucose. How many molecules of glucose are represented?

• 2
• 6
• 12
• 24

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NGSS.MS-PS1-1

According to the Chemical Compounds table above, how many total atoms are in Glucose?

• 3
• 18
• 24
• 432

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NGSS.MS-PS1-1

Refer to the Chemical Compounds table above. How many total elements are in Ethanol? Record your answer. Be sure to use the correct place value.

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NGSS.MS-PS1-1

The names and chemical formulas of four substances are shown in the chart. Which substance listed in the chart is made up of the most atoms?

• Carbonic acid
• Nitric acid
• Phosphoric acid
• Sulfuric acid

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NGSS.MS-PS1-1

Which of the following formulas contain the same number of oxygen atoms?

• Formulas I and II
• Formulas II and IV
• Formulas I, II, and III
• Formulas I, II, and IV

A balanced chemical equation is shown. How many different elements are in the chemical equation?

• 2
• 4
• 13
• 50

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NGSS.MS-PS1-1

How many atoms are in one molecule of baking soda, NaHCO3? Record your answer. Be sure to use the correct place value.

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NGSS.MS-PS1-1

Oxygen and oxygen-containing compounds are involved in many different reactions. Which balanced equation represents a reaction that involves 14 atoms of oxygen?

• 
• 
• 
• 

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NGSS.MS-PS1-1

NGSS.MS-PS1-5