How do catalysts affect a chemical reaction?(1 point)
Responses
lose activation energy
lose activation energy
increase activation energy
increase activation energy
provide activation energy
provide activation energy
lower activation energy
lower activation energy
11 answers
lower activation energy
What happens during rusting of an iron nail?(1 point)
Responses
Sulfur and oxygen combine to form a sulfur dioxide coating.
Sulfur and oxygen combine to form a sulfur dioxide coating.
Iron and sulfur combine to form iron sulfide.
Iron and sulfur combine to form iron sulfide.
Sulfur, iron, and oxygen combine to form iron sulfoxide.
Sulfur, iron, and oxygen combine to form iron sulfoxide.
Iron and oxygen combine to form iron oxide.
Responses
Sulfur and oxygen combine to form a sulfur dioxide coating.
Sulfur and oxygen combine to form a sulfur dioxide coating.
Iron and sulfur combine to form iron sulfide.
Iron and sulfur combine to form iron sulfide.
Sulfur, iron, and oxygen combine to form iron sulfoxide.
Sulfur, iron, and oxygen combine to form iron sulfoxide.
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 is reversible.
The reaction is reversible.
The reaction proceeds quickly.
Responses
The reaction proceeds slowly.
The reaction proceeds slowly.
The reaction yields something.
The reaction yields something.
The reaction is reversible.
The reaction is reversible.
The reaction proceeds quickly.
The reaction proceeds in the forward direction.
that not one of the answer
I apologize for the confusion. The correct answer is:
The reaction yields something.
The reaction yields something.
Which kind of reaction is photosynthesis?(1 point)
Responses
exothermic
exothermic
light-independent
light-independent
temperature-independent
temperature-independent
endothermic
Responses
exothermic
exothermic
light-independent
light-independent
temperature-independent
temperature-independent
endothermic
endothermic
Photosynthesis requires which kind of energy?(1 point)
Responses
light energy
light energy
heat energy
heat energy
mechanical energy
mechanical energy
thermal energy
thermal energy
Responses
light energy
light energy
heat energy
heat energy
mechanical energy
mechanical energy
thermal energy
thermal energy
light energy
1 answer