Worksheet on Atomic structure Learning Mat

How was it proved that electrons were
negatively charged?

Which element was choosen for Rutherford’s experiment?

How was it proved that protons were positively

How was it proved that neutrons
were neutal?

How is mass number calculated?

Why is an atom always neutral?

What are isotopes? Give examples.

Calculate the relative atomic mass of Boron if in a sample of boron, 20% of the atoms are 10Br
and 80% are 11Br.If there
are 100 atoms, then 20 atoms would be 10Br and 80 atoms would be 11Br.

This article was written by Anup Sharma

I am a life- long learner and learned not only to be an effective IB teacher but an Educational leader. I have motivated and guided thousands of students and tens of teachers till now. I have worked as educational leader in schools and successfully motivated the team to perform at their best. As an Educational leader I organised many events and competitions of both academics and sports. I have conducted Public examinations of a state of Diu as Centre superintendent appointed directly by Govt of India. More About Me

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