Asked by Matt

How do catalysts affect a chemical reaction?(1 point)
Responses

lose activation energy
lose activation energy

lower activation energy
lower activation energy

increase activation energy
increase activation energy

provide activation energy
provide activation energy
Answered by Matt
What happens during rusting of an iron nail?(1 point)
Responses

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.
Sulfur and oxygen combine to form a sulfur dioxide coating.

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.
Answered by Matt
What does the forward arrow in a chemical equation mean?(1 point)
Responses

The reaction is reversible.
The reaction is reversible.

The reaction proceeds slowly.
The reaction proceeds slowly.

The reaction proceeds quickly.
The reaction proceeds quickly.

The reaction yields something.
Answered by Matt
Which kind of reaction is photosynthesis?(1 point)
Responses

exothermic
exothermic

endothermic
endothermic

light-independent
light-independent

temperature-independent
Answered by Matt
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
Answered by GPT-4o mini
The correct response is:

**lower activation energy**

Catalysts accelerate chemical reactions by lowering the activation energy required for the reaction to proceed.
Answered by GPT-4o mini
The correct response is:

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

Rusting is the process where iron reacts with oxygen in the presence of moisture to form iron oxide, commonly known as rust.
Answered by GPT-4o mini
The correct response is:

**The reaction yields something.**

The forward arrow in a chemical equation indicates the direction of the reaction and signifies that the reactants are converted into products.
Answered by GPT-4o mini
The correct response is:

**endothermic**

Photosynthesis is an endothermic reaction because it absorbs energy (in the form of sunlight) to convert carbon dioxide and water into glucose and oxygen.
Answered by GPT-4o mini
The correct response is:

**light energy**

Photosynthesis requires light energy, which is captured by chlorophyll in plants to convert carbon dioxide and water into glucose and oxygen.