Inside An Atom

The atomic number of potassium is 19. Therefore, the Potassium atom has:

• 19 protons, 39 neutrons, 19 electrons
• 39 protons, 19 neutrons, 26 electrons
• 19 protons, 20 neutrons, 19 electrons

What is at the center of every atom?

• An electron
• A compound
• A molecule
• A nucleus

Which two particles make up the nucleus of an atom?

• Protons and Electrons
• Protons and Neutrons
• Molecules and Compounds
• Neutrons and Electrons

Tags

NGSS.MS-PS1-1

In an atom, what is the number of protons equal to?

• The number of electrons.
• The number of neutrons.
• The number of molecules.
• The number of nuclei.

Tags

NGSS.MS-PS1-1

The positively charged particles of an atom are the ________.

• electrons
• protons
• neutrons
• protons & neutrons

Tags

NGSS.MS-PS1-1

The negatively charged particles of an atom are the ______.

• electrons
• protons
• neutrons
• protons & neutrons

Tags

NGSS.MS-PS1-1

What is this called?

• Bohr's Model
• Electron Table
• Breakfast Table
• Periodic Table

Tags

NGSS.MS-PS1-1

An electron has this charge

• positive
• negative
• neutral

Tags

NGSS.MS-PS2-3

A neutron has this charge

• negative
• positive
• neutral

A proton has this charge

• negative
• positive
• neutral