WHICH IS THE MOST STANDARD UNIT OF A PIECE OF MATTER?

• Molecules

• Atoms

• Protons

• electrons

• spongebob

Tags

NGSS.MS-PS1-1

What is a molecule

• group of atoms bonded together,

• another word for atom

• a mixture of elements

• smallest fundamental unit of a chemical compound

Tags

NGSS.MS-PS1-1

An Ion is an atom that has

• to many or to few protons to be stable

• to many or to few electrons to be stable

• to many or to few molecules to be stable

• to many or to few neutrons to be stable

Tags

NGSS.MS-PS1-1

Match the following

• positively charged ion

• valence electron

• a negatively charged ion

• cation

• the electrons on the outermost shell

• Electron configuration

• the arrangement of electrons around the nucleus of a particular atom or molecule

• Anion

• contains both protons and neutrons

•  nucleus

Tags

NGSS.MS-PS1-1

What happens to a electron when it moves away from the nucleus

• it gains energy

• it often spins away

• it turns to a wave

• it loses energy

Tags

NGSS.MS-PS3-5

(within the bounds of this class) Can atoms be destroyed?

• only under lots of pressure

• no

• yes

• only if they explode

Tags

NGSS.MS-PS1-5

What is a Rutherford model

• the basis for the preiodic table

• A model that uses dots around an atom to show it's valence electrons

• a model that shows electrons and protons together

• A model that introduced the negatively charged electrons surrounding the nucleus

Tags

NGSS.MS-PS1-1

Match the following

• a thing that is composed of two or more separate elements, a mixture.

• Mixture

• a substance that cannot be broken down by any non-nuclear reaction

• Compound

• composed of one or more pure substances in varying composition

• Atom

• the basic unit of a chemical element

• Molecule

• a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound

• element

Tags

NGSS.MS-PS1-1

what group is hydrogen (H) in?

• 2

• 4

• 3

• 1

what period is potassium (K) in?

• 2

• 4

• 3

• 1