The nucleus is the center of the atom.

To solve for the number of neutrons, you should add the mass number and the atomic number.

Synthetic elements are elements that are naturally occurring in nature. 

The electron cloud is the area around the nucleus of the atom where protons are most likely found.

The nucleus is positively charged due to the protons and neutrons found there.

What particles make up the nucleus and the mass of an atom?

Horizontal rows of the periodic table are called

Atoms of the same element with different numbers of neutrons are called what?

Vertical columns of the periodic table are called

Which particle defines or determines what element an atom is?

Two isotopes of Carbon are C-12 and C-13, these isotopes differ from one another by one what?

Which of the following would result in a neutrally charged atom?

Negative Charge

Positive Charge

Neutral Charge

Located on the left side of the staircase

Located on the staircase

Located on the right side of the staircase

Usually gasses, brittle, and are poor conductors of electricity & heat 

Malleable, good conductors of electricity & heat, and mostly solids.

Have characteristics of both metals and nonmetals