Atoms Test Review

What are atoms considered to be?

• Large structures of matter

• Basic building blocks of matter

• Unimportant particles

• Invisible forces

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

What is the overall charge of the electron cloud?

• Positive

• Neutral

• Negative

• No charge

What is the size of atoms described as?

• Large

• Medium

• Tiny

• Gigantic

What model did Niels Bohr build upon?

• Democritus' model

• Rutherford's model

• Einstein's model

• Newton's model

What is the role of the electromagnetic force in an atom?

• Holds protons and neutrons together

• Keeps electrons in orbit

• Provides mass to the atom

• Balances the charge

Tags

NGSS.HS-PS2-4

What are valence electrons?

• Electrons in the innermost shell

• Electrons in the outermost shell

• Electrons in the nucleus

• Electrons in the second shell

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In a Bohr diagram, what does the letter "P" stand for in the nucleus?

• Protons

• Photons

• Particles

• Positrons

What is the significance of the outermost ring in a Bohr diagram?

• It represents the atomic mass

• It represents the valence shell

• It represents the nucleus

• It represents the proton count

How are energy levels (Electrons) depicted in a Bohr diagram?

• As squares

• As triangles

• As rings

• As lines

What distinguishes one element from another?

• The number of electrons

• The atomic number

• The atomic mass

• The number of neutrons