A physical change doesn't change what the substance is but for chemical change a new substance is formed and energy is either given off or absorbed.
<span>Radium and Polonium were named in honor of Marie Curie.
SO yeh true
Hope this helps!
:)
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I think the correct answer from the choices listed above is option A. The three components of air are all <span>classified as pure substances since they are not chemically bonded so they can be separated by certain processes and be present as a pure substance. Hope this answers the question.</span>
D. Chemical to thermal and electromagnetic
Answer:
Explanation:
You can view more details on each measurement unit: molecular weight of Copper(I) Oxide or grams The molecular formula for Copper(I) Oxide is Cu2O. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Copper(I) Oxide, or 143.0914 grams.
