Heat (energy) and matter are both able to enter or leave the system.
No. Because compounds need negative ions. e.g bromide, sulphate. So Sodium Magnesium isn’t a real compound and cannot be formed into a negative ion.
Answer:B
Explanation:
The solid and the gas are forming a brand new solid which is a chemical change
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Answer:
Explanation:
A bigger ice block is made up of more particles
( sorry if this doesnt help it really didnt make sence to me!)
Answer:
Instead, pour a small amount into a beaker or clean weigh dish. Once you have added a chemical to a container, label it promptly. When you are finished with the experiment, dispose of the excess chemical as chemical waste. Do not simply pour the excess chemical down the sink.