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Part D
After about 30 minutes, observe the substances in the test tubes again. Record your observ
Include any evidence of a chemical reaction.
A Caution! If you plan toleave your substances unattended, be sure they are in a safe locati
from young children and pets.

Test tube
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Part D After About 30 Minutes Observe The Substances In The Test Tubes Again Record Your Observ Include Any Evidence Of A Chemical Reaction A Caution If You Pla class=