Answer:
Energy
Explanation:
Energy can simply be defined as the ability to do work. It is a measure of the amount of work a body or object can do. The more the work a body is able to accomplish, the more the energy it posses. The unit of energy is always expressed in joules.
Mass is the amount of matter in a substance.
Velocity is rate of change of displacement with time.
Answer:
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Answer:
A horizontal row in the periodic table, which signifies the totoal number of electron shells in an element's atom.
Explanation:
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Answer:
B.
Explanation:
B.They expand to completely fill their container.
We are given the balanced equation 2NaF + Ca10(PO4)6(OH)2 → Ca10(PO4)6F2 + 2NaOH. The fluorapatite is the product together with sodium hydroxide. The ions involved are (PO4) 3-, Ca 2+ and <span>F-. We add the charges and check if the sum is zero, 2*10+-3*6+-1*2 =0. the zero sum tells that the compound has zero charge or neutral</span>