Chemical Reactions Quiz - Mr. Morgan

A chemical reaction takes place when

• a substance mixes with another substance to form a heterogeneous mixture.
• a substance changes from a solid to a liquid.
• two or more substances are combined to form a new substance.
• two or more substances are mixed together, and the new substance has the same properties as the old substance.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

In the compound MgO, which of the following statements are true?

• Magnesium will lose 2 electrons, oxygen will gain 2 electrons.
• Magnesium will lose 2 electrons, oxygen will gain 1 electron.
• Magnesium and oxygen will both lose 2 electrons.
• Magnesium and oxygen will form a covalent compound.

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NGSS.MS-PS1-1

Balance the following equation:

• 1, 2, 1, 2
• 3, 2, 3, 1
• 3, 1, 3, 1
• 1, 1, 1, 1

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is true about an ionic bond?

• Electrons are transferred.
• A cation combines with an anion.
• A metal bonds with a non-metal.
• All of the above.

Look at the equation below. According to the Law of Conservation of Mass, what would be the mass of Cl?

• 60g
• 100g
• 151g
• 141g

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NGSS.MS-PS1-5

Which of the following is the appropriate name for this compound:

• calcium dichloride
• calcium chloride
• monocalcium dichloride
• calcium chlorine

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NGSS.MS-PS1-1

Which of the following is the appropriate chemical formula for sodium iodide?

• A
• B
• C
• D

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NGSS.MS-PS1-1

Balance the following equation:

• 2, 1, 2
• 2, 4, 2
• 4, 2, 1
• 1, 2, 1

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NGSS.MS-PS1-5

Which of the following is the major difference between an ionic bond and a covalent bond?

• Covalent bonds transfer electrons while ionic bonds share electrons.
• Covalent bonds share electrons while ionic bonds transfer electrons.
• Covalent bonds are chemical bonds while ionic bonds are not.
• Covalent bonds happen in metals; ionic bonds happen in non-metals.

Which of the following best describes an exothermic reaction?

• Heat is produced.
• Ice crystals may form.
• Energy is absorbed.
• Energy is created and destroyed.

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NGSS.HS-PS1-4