Build an Atom pHet Knowledge Check

The nucleus of an atom is made of

• electrons and protons
• electrons and neutrons
• protons and neutrons
• empty space

Tags

NGSS.MS-PS1-1

Value representing the number of protons in an element

• Atomic Mass
• Mass Number
• Valence Electrons
• Atomic Number

A charged atom

• Ion
• Isotope
• Electron Cloud
• Quark

Tags

NGSS.HS-PS1-3

NGSS.HS-PS2-4

Which part of an atom is used to identify it?

• number of protons

• number of neutrons

• number of electrons

Tags

NGSS.MS-PS1-1

When you have an ion of an atom, O^-2 for example, what has changed in the atomic structure?

• Number of protons

• Number of neutrons

• Number of electrons

Tags

NGSS.MS-PS1-1

When you have a negative ion of an atom, O^-2 for example, do you have a higher number of protons or electrons?

• Number of protons

• Number of electrons

Tags

NGSS.MS-PS1-1

Which of the following is correct?

• Protons are positive, electrons are negative, neutrons are neutral.

• Protons are neutral, electrons are negative, neutrons are positive

• Protons are negative, electrons are positive, neutrons are neutral

• Protons are positive, electrons are neutral, neutrons are negative

Tags

NGSS.MS-PS1-1

Iodine-131

The -131 tells you the

• number of protons.

• mass number

• charge of the atom.

Tags

NGSS.HS-PS1-8

What two subatomic particles must be equal for an atom to have no charge (neutral).

• protons and neutrons

• protons and electrons

• electrons and neutrons

Tags

NGSS.MS-PS1-1

If an atom contains exactly three protons, then it's an atom of _____

• lithium
• gold
• nitrogen
• carbon

Tags

NGSS.MS-PS1-1