Homework Help: Science

Posted by Happy Face on Thursday, January 8, 2009 at 6:00pm.

1: TRUE or FALSE? Elements are pure types of matter.
2: TRUE or FALSE? Atoms are made from molecules.
3: TRUE or FALSE? Chlorophyll is needed for cellular respiration.
4: TRUE or FALSE? Matter and energy flow through food chains.
5: TRUE or FALSE? Chemical compounds contain at least two types of atoms.
PLEASE HELP!!
Thank You......

Science - DrBob222, Thursday, January 8, 2009 at 6:02pm
Help how? Atoms make up molecules. Elements are pure matter. What don't you understand that keeps you from answering the others.
Science - Happy Face, Thursday, January 8, 2009 at 6:19pm
So that means true for numbers 1 and 2.
False for 3 and 4.
true for 5.
are my answers correct?
Please help.
Thank you.
Science - Steve, Friday, January 9, 2009 at 1:04am
"Atoms make up molecules."

So how could number 2 be true?

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