How do catalysts affect a chemical reaction?(1 point)
Responses
provide activation energy
provide activation energy
increase activation energy
increase activation energy
lose activation energy
lose activation energy
lower activation energy
10 answers
lower activation energy
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.
Sulfur and oxygen combine to form a sulfur dioxide coating.
Sulfur and oxygen combine to form a sulfur dioxide coating.
Iron and oxygen combine to form iron oxide.
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.
Sulfur and oxygen combine to form a sulfur dioxide coating.
Sulfur and oxygen combine to form a sulfur dioxide coating.
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 quickly.
The reaction proceeds quickly.
The reaction is reversible.
The reaction is reversible.
The reaction proceeds slowly.
The reaction proceeds slowly.
The reaction yields something.
The reaction yields something.
Responses
The reaction proceeds quickly.
The reaction proceeds quickly.
The reaction is reversible.
The reaction is reversible.
The reaction proceeds slowly.
The reaction proceeds slowly.
The reaction yields something.
The reaction yields something.
The reaction is reversible.
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
thermal energy
thermal energy
mechanical energy
Responses
light energy
light energy
heat energy
heat energy
thermal energy
thermal energy
mechanical energy
light energy
It's
D. lower activation energy
D. Iron and oxygen combine to form iron oxide.
A. The reaction yields something.
A. endothermic
The bot got
"What does the forward arrow in a chemical equation mean?
The reaction yields something.
The reaction proceeds slowly.
The reaction is reversible.
The reaction proceeds quickly."
wrong.
D. lower activation energy
D. Iron and oxygen combine to form iron oxide.
A. The reaction yields something.
A. endothermic
The bot got
"What does the forward arrow in a chemical equation mean?
The reaction yields something.
The reaction proceeds slowly.
The reaction is reversible.
The reaction proceeds quickly."
wrong.
1 answer