8.5a 8.5b 8.5c

The volume of the atom is located in the --

• in the Nucleus

• in the Electron Cloud

The atoms of a certain element each contain 18 protons and 8 valence electrons.

What is the element's name?

• Argon

• Krypton

• Neon

• Sodium

Tags

NGSS.MS-PS1-1

Elements in the same group/family--

• have the same # of valence

• behave the same

• have the same # of energy shells

• are in the same period

These types of elements are BRITTLE and DO NOT conduct electricity.

• Metals

• Nonmetals

• Metalloids

The electron cloud contains electrons and --

• protons

• neutrons

• gas and dust

• empty space

What statement about a proton is correct?

• A proton has no electrical charge

• A proton has a positive electrical charge

• A proton has a negative electrical charge

• A proton can have either a positive or a negative electrical charge

Tags

NGSS.MS-PS2-3

the electrons in the electron cloud--

• remain in place

• move along a pathway

• vibrate in place

• move about chaotically with no pathway

Tags

NGSS.MS-PS2-3

Valence electrons determine an atom's--

• proton number

• chemical reactivity

• atomic mass

• atomic number

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The electrons in the electron cloud

• remain in place

• vibrate in place

• move along a pathway

• move about chaotically with no pathway

Tags

NGSS.HS-PS2-5

Which is NOT found in the nucleus of an atom?

• Neutrons

• Protons

• the mass of an atom

• electrons

Tags

NGSS.MS-PS1-1