True or False
1. An atom has no weight.
2An electron is the heaviest part of an atom
. 3. All protons weigh the same.
4.All atoms weigh the same.
5. All neutrons weigh the same.
6. An oxygen atom can weigh the same as a nitrogen atom
7.All oxygen atoms weigh the same.
8. To find the mass of an atom, we add the neutrons and electrons The atomic mass of Calcium is 40.08.
9.The rounded off mass is 41.
10Isotopes are atoms of the same element that have a different number of protons.
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