Chem q1 Exam

Who named the atom?

• Thomson

• Democritus

• Rutherford

• Bohr

Who discovered the electron?

• Democritus

• Thomson

• Schrodinger

• Chadwick

Who discovered the nucleus and proton?

• Schrodinger

• Bohr

• Rutherford

• Thomson

Tags

NGSS.HS-PS1-8

Who determined that electrons travel in orbits called energy levels?

• Bohr

• Chadwick

• Democritus

• Rutherford

Who discovered the neutron?

• Chadwick

• Schrodinger

• Thomson

• Rutherford

Who created the cloud model of the atom (our current model)?

• Democritus

• Chadwick

• Schrodinger

• Bohr

Organize these options into the right categories

Groups:

(a) Chemical Property/Change

,

(b) Physical Property/Change

• Ability to conduct electricity

• Change of State

• Rotting

• Dissolve

• Decomposing

• Neutralizing

• Flammability

• Breaking into pieces

• Rusting

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The more markings a piece of glassware has on it, the more _________ it is.

• accurate

• precise

• good

• wrong

Label the parts of an atom

a

b

c

d

Neutrons

Proton

Valence Electrons

Electron

Tags

NGSS.MS-PS1-1

Organize these options into the right categories

Groups:

(a) Heterogeneous Mixture

,

(b) Homogenous Mixture

• lemonade

• air

• oil and water

• blood

• salt water

• steel

• salad

• soil

• lucky charms

• trail mix