1) This is a definition.
2) Protons are given by the bottom number (since atomic number = number of protons).
3) Neutrons = (mass number)-(atomic number), which are the top and bottom numbers, respectively.
4) Nuclear fusion involves combining two things together, which is only reflected by the last option.
5) This is a fact.
6) This is a fact.
7) This is a fact.
8) This is a fact.
9) The correct option is the explanation.
Answer:
8
Explanation:
the number before the abbrviation for calcium (Ca) shows how many calcium there is.
Option D
The car is accelerating, because if it were at rest you wouldn't see the line, and if the car was going at constant speed (forwards or backwards) then the line would be straight.
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Ionic bonds are strong electrostatic forces of attraction formed between oppositely charged ions (between metal and non-metals)
(B) Radiation
At the quantum level electromagneticradiation radiation is produced when the wavepacket of a charged particle oscillates or otherwise accelerates
