An element is the purest form of molecular makeup. (hydrogen, carbon, etc.)
A compound is a substance formed by 2+ elements.
A reaction is a chemical change, in this case the foam rising from the dish.
A <u>catalyst</u> is something that causes a reaction.
Neutralization is when acids and bases balance out.
Conservation states that matter is not created nor destroyed but rather changes forms.
I believe the answer is a: (Jennings 88).
adding a direct quote makes you sound as though you paid attention, and you know what you're talking about, making you seem more reliable
Answer:
1. My parents <em><u>been</u></em> in New York two weeks from today.
2. Nothing much <em><u>happened</u></em> when I got to the meeting.
3. I was tired yesterday because I <em><u>have not slept</u></em> well the night before.
4. When I left the house this morning it <em><u>had already rained</u></em>
5. They <em><u>have been</u></em> in Chicago for 20 years
Answer:
Look it up. it will help you work it out. hope this helped.
Explanation:
:)
