Build an Atom

Based on the atom's diagram, identify the element.

• Oxygen

• Fluorine

• Carbon

• Hydrogen

Tags

NGSS.MS-PS1-1

The mass number of an atom is determined by the sum of which subatomic particles?

• Protons and electrons

• Neutrons and electrons

• Protons and neutrons

• Electrons only

What subatomic particle determines the identity of an atom?

• Electron

• Neutron

• Proton

• Neuron

The central region of an atom where its neutrons and protons are is its

• nucleus

• electron cloud

• core

• center

The NUCLEUS of an atom has an overall ___.

• positive charge

• negative charge

• neutral charge

• static charge

Choose all of the correct answers about electrons.

• Electrons are positively charged subatomic particles inside the nucleus

• Electrons are negatively charged subatomic particles

• Electrons are subatomic particles with no charge

• Electrons are located outside of the nucleus in the electron cloud

Tags

NGSS.MS-PS1-5

NGSS.MS-PS2-3

What is the bottom number (that the blue arrow is pointing to) equal to?

• # of protons + # of neutrons

• # of electrons + # of neutrons

• # of protons + # of electrons

• # of protons + # of nuetrons + # of electrons

Tags

NGSS.MS-PS1-1

Which of these is the electron?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-1

Where is most of the mass of an atom located?

• In the nucleus

• Electron cloud

• In the electron

• Evenly spread throughout the atom

What is the charge of a proton in an atom?

• Positive

• Negative

• Neutral

• Variable