Tek 8.5a

A neutral atom is an atom with the same number of:

• electrons and neutrons

• protons and neutrons

• protons and electrons

• electrons and valence electrons

the electrons in the electron cloud--

• remain in place

• move along a pathway

• vibrate in place

• move about chaotically with no pathway

Valence electrons determine an atom's--

• proton number

• chemical reactivity

• atomic mass

• atomic number

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Most elements in the Periodic Table are classified as --

• Metals

• Noble gases

• Nonmetals

• Reactants

What types of particles are found in the cloud surrounding the atom's nucleus?

• Positively charged particles and negatively charged particles

• Negatively charged particles only

• Neutral particles and positively charged particles

• Positively charged particles only

The electrons in the electron cloud

• remain in place

• vibrate in place

• move along a pathway

• move about chaotically with no pathway

Which description best describes a Neutron?

• positive charge, 1 amu, located in the nucleus

• negative charge, 0 amu, located in the electron cloud

• neutral charge, 1 amu, located in the nucleus

• negative charge, 1 amu, located in the nucleus

Which is NOT found in the nucleus of an atom?

• Neutrons

• Protons

• the mass of an atom

• electrons

Tags

NGSS.MS-PS1-1

These two subatomic particles contribute to the mass of the atom.

• Protons and Electrons

• Protons and Neutrons

• Electrons and Neutrons

Which subatomic particle has a positive charge?

• Electron

• Neutron

• Proton

• Photon