Atomic Structure

Front

Which particle has a positive charge?

Back

proton

Front

This particle determines what element you have - the element's identity.

Back

proton

Front

What causes the mass of the nucleus to increase?

Back

adding a neutron

Front

Which particles make up the nucleus of an atom?

Back

protons and neutrons

Front

An element with a mass number of 11 and an atomic number of 5 has how many neutrons?

Back

6

Front

An atom has 13 protons, 15 neutrons and ___ electrons. What is its mass number?

Back

28

Front

In the modern periodic table, elements are arranged by:

Back

atomic number

Front

Who was the first person to come up with the Atomic Theory?

Back

John Dalton

Front

Who discovered that the nucleus contains positively charged particles called protons?

Back

Ernest Rutherford

Front

Who discovered the electron?

Back

Joseph Thomson