Chapter 4 - Physical Science Concepts in Action

How many electrons can fit in the second energy level?

Find the atomic number for Cu

Thomson used a cathode ray to discover the presence of

This subatomic particle has a neutral charge and is found in the nucleus

This philosopher believed that substances were built up of only four elements

The smallest of the subatomic particles are

The possible energies that electrons in an atom can have are called

Which of the following is NOT a part of Dalton's atomic theory?

Which scientist discovered the nucleus?

these subatomic particles are found in the nucleus (two answers)

Calculate the number of neutrons for Beryllium

How can you calculate the number of electrons in an element?

This experiment led to the discovery of the nucleus

This means that the element has a different number of neutrons.

This scientist concluded that electrons travel in a fixed pathway.