Understanding Chemical Reactions and Equations

Which of the following is a synthesis reaction?

Tags

NGSS.MS-PS1-5

• There are 4 hydrogen atoms

• There are 4 sulfur atoms

• There are 4 oxygen atoms

• There are 4 molecules

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NGSS.MS-PS1-1

Which of the following best describes a decomposition reaction?

• Two or more substances combine to form one product

• One chemical breaks down into two or more simpler substances

• Two compounds exchange ions

• A substance reacts with oxygen to produce energy

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

Which of the following is a single replacement reaction?

Which of the following is a combustion reaction?

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NGSS.MS-PS1-5

What is the difference between a coefficient and a subscript in a chemical equation?

• Coefficient shows the number of atoms, subscript shows the number of molecules

• Coefficient shows the number of molecules, subscript shows the number of atoms in a molecule

• Both show the number of atoms

• Both show the number of molecules

Which of the following is a double replacement reaction?

• Synthesis

• Decomposition

• Combustion

• Single Replacement

Which of the following equations is correctly balanced?

Tags

NGSS.MS-PS1-5