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How do catalysts affect a chemical reaction?

lose activation energy

provide activation energy

increase activation energy

lower activation energy***

What does the forward arrow in a chemical equation mean?

The reaction is reversible.

The reaction proceeds quickly.

The reaction yields something.***

The reaction proceeds slowly.

Which kind of reaction is photosynthesis?

endothermic***

light-independent

exothermic

temperature-independent

Photosynthesis requires which kind of energy?

thermal energy

mechanical energy

light energy***

heat energy

What happens during rusting of an iron nail?

Iron and sulfur combine to form iron sulfide.

Sulfur and oxygen combine to form a sulfur dioxide coating.

Iron and oxygen combine to form iron oxide.***

Sulfur, iron, and oxygen combine to form iron sulfoxide.

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10 answers

  1. All correct, 100% :)

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  2. The questions are scrambled now but this is the new ones.
    1.a {lower activation energy}
    2.d {Iron and oxygen combine to…}
    3.d {The reaction yields something}
    4.d {endothermic}
    5.c {light energy}

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  3. they're all correct

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  4. NEVERMIND!!!!!!!!! I WAS WRONG :(

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  5. are they correct

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  6. NonBinaryA is right for new answers.

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  7. NonBinaryA is right trust

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  8. THANK YOU MATE!! god im late to this website

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  9. ! CAN YALL SUB TO MY YOUTUBE ITS MY USERNAME , I POST 2K AND FORTNITE . IM TRYNA BLOW UP!!!

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  10. D
    C
    A
    B
    C
    quicker way to cheat :)

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