Parts of an Atom

What part is positive inside the nucleus?

• electron

• nucleus

• proton

• neutron

What part is negative and exists in a cloud outside of the nucleus?

• electron

• neutron

• nucleus

• proton

Tags

NGSS.MS-PS1-1

The core of an atom is made up of these two parts.

• electrons, protons

• protons, neutrons

• protons, nucleus

• neutrons, electrons

Tags

NGSS.MS-PS1-1

The neutral particles are called the ------?

• protons

• electrons

• nucleus

• neutrons

Tags

NGSS.MS-PS1-1

Label the atomic parts., their charge, and location.

Tags

NGSS.MS-PS1-1

The electron cloud contains only_________.

• nucleus

• neutrons

• electrons

• protons

Tags

NGSS.MS-PS1-1

The atomic number is the number of _______ in an atom.

• protons

• neutrons

• protons and neutrons

• neutrons and electrons

Tags

NGSS.MS-PS1-1

The mass number is the _______ inside one atom.

• number of electrons

• number of electrons and protons

• number of neutrons and protons

• number of neutrons

Tags

NGSS.MS-PS1-1

To find the number of neutrons, you must

• Subtract atomic number from mass number. (Example: 14-7=7 neutrons)

• Subtract mass number from atomic number. (Example: 7-14= -7 neutrons)

Tags

NGSS.MS-PS1-1

This negative particle is 1/1800 of the size of a neutron or proton- super tiny!

• nucleus

• electron

Tags

NGSS.MS-PS1-1