Anyone know this? i will give to the one who helps me out.

Choose all 5 that are true about a catalyst.

Question 1 options:

You can use a graph to show how a catalyst lowers the activation energy.

A catalyst does change in a chemical reaction.

A catalyst does not change in a chemical reaction. It lowers the activation energy (like a short-cut).

The Nox, hydrocarbons and carbon monoxide in a car are examples because they are poisonous.

It raises the activation energy.

The gold and platinum in a car are examples because they help make the reactions happen to get rid of the poisons.

Enzymes such as lactase in your body are examples.