NC Physical Science EOC Release 2018: Part II

Which represents a balanced chemical equation?

• A

• B

• C

• D

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What type of chemical reaction occurs when beryllium (Be) combines with oxygen (O2) to form beryllium oxide (BeO)?

• double replacement

• single replacement

• decomposition

• synthesis

Which equation represents a neutralization reaction?

• A

• B

• C

• D

Which of these elements is the most chemically reactive?

• beryllium (Be)

• calcium (Ca)

• strontium (Sr)

• radium (Ra)

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Which compound contains ionic bonds?

• A

• B

• C

• D

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NGSS.HS-PS1-1

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This unbalanced equation represents a chemical reaction: SEE IMAGE

What is the coefficient for NaI once the equation is balanced?

• A

• B

• C

• D

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NGSS.HS-PS1-7

What type of bond will form when an element from group 2 (IIA) bonds with an element from group 17 (VIIA)?

• hydrogen bond

• covalent bond

• metallic bond

• ionic bond

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This chart shows the effects of several solutions on litmus paper. Which information can be determined from the litmus paper tests?

• Solutions 1 and 5 are both acids.

• Solutions 2 and 8 are both neutral.

• Solutions 3 and 6 are both bases.

• Solutions 4 and 7 are both acids.

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A 100-gram sample of cerium-143 has a half-life of 33 hours. How long will it take until there are only 6.25 grams of cerium-143 left?

• 66 hours

• 99 hours

• 132 hours

• 165 hours

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NGSS.HS-PS1-8

The chart below lists the specific heat capacity of four different metals of equal mass. If the temperature of each metal were increased from 20°C to 25°C, which metal would require the least amount of heat to raise its temperature?

• A

• B

• C

• D

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