Answer:
A physical property is an aspect of matter that can be observed or measured without changing it. A chemical property may only be observed by changing the chemical identity of a substance.
Explanation:
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The 2 sources are solar and nuclear energy.
Answer:
C
Explanation:
When a line segment and a plane intersect, they intersect at a point. They both coincide on point C
Answer:ionic
Explanation: ionic bond formation
In the ionic bond formation between calcium and sulfur, a calcium atom donates two valence electrons to a sulfur atom to form a Ca2+ ion and an S2+ ⁻ ion.
