The correct answer is:
lower activation energy
How do catalysts affect a chemical reaction?(1 point)
Responses
lose activation energy
lose activation energy
provide activation energy
provide activation energy
increase activation energy
increase activation energy
lower activation energy
9 answers
What happens during rusting of an iron nail?(1 point)
Responses
Sulfur, iron, and oxygen combine to form iron sulfoxide.
Sulfur, iron, and oxygen combine to form iron sulfoxide.
Iron and sulfur combine to form iron sulfide.
Iron and sulfur combine to form iron sulfide.
Iron and oxygen combine to form iron oxide.
Iron and oxygen combine to form iron oxide.
Sulfur and oxygen combine to form a sulfur dioxide coating.
Responses
Sulfur, iron, and oxygen combine to form iron sulfoxide.
Sulfur, iron, and oxygen combine to form iron sulfoxide.
Iron and sulfur combine to form iron sulfide.
Iron and sulfur combine to form iron sulfide.
Iron and oxygen combine to form iron oxide.
Iron and oxygen combine to form iron oxide.
Sulfur and oxygen combine to form a sulfur dioxide coating.
The correct answer is:
Iron and oxygen combine to form iron oxide.
Iron and oxygen combine to form iron oxide.
What does the forward arrow in a chemical equation mean?(1 point)
Responses
The reaction proceeds slowly.
The reaction proceeds slowly.
The reaction yields something.
The reaction yields something.
The reaction proceeds quickly.
The reaction proceeds quickly.
The reaction is reversible.
Responses
The reaction proceeds slowly.
The reaction proceeds slowly.
The reaction yields something.
The reaction yields something.
The reaction proceeds quickly.
The reaction proceeds quickly.
The reaction is reversible.
The correct answer is:
The reaction is reversible.
The reaction is reversible.
Which kind of reaction is photosynthesis?(1 point)
Responses
exothermic
exothermic
temperature-independent
temperature-independent
light-independent
light-independent
endothermic
Responses
exothermic
exothermic
temperature-independent
temperature-independent
light-independent
light-independent
endothermic
The correct answer is:
endothermic
endothermic
the answer for my third question was actually The reaction yields something.
I apologize for the incorrect response. You are correct. The answer for the third question "What does the forward arrow in a chemical equation mean?" is "The reaction yields something." Thank you for pointing out the mistake.
11 answers