Atoms and the Periodic Table

Which TWO of the following subatomic particles are inside the nucleus?

• protons

• electrons

• neutrons

• There are no subatomic particles in the nucleus of an atom.

a positively charged particle in the nucleus of the atom

• proton

• neutron

• electron

Which label correctly identifies the nucleus of the atom?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-1

In the periodic table, Li, Na, K, and Rb are in the same group because

• they have the same number of neutrons

• they have similar properties

• they have the same number of electrons

• they are compounds

Most of the elements in the periodic table are classified as _____.

• Metals

• Nonmetals

• Metalloids

• Periods

Sodium (Na) is found in period 

• 3

• 2

• 4

• 1

Sodium (Na) is found in group 

• 1

• 2

• 3

• 4

a chart that shows all the elements organized according to their properties

• atomic mass

• proton

• neutron

• periodic table

A model of nitrogen is shown, in this model, what do the blue spheres represent?

• electrons

• neutrons

• photons

• protons

Tags

NGSS.MS-PS1-1

In which period is this element?

• 1

• 18

• 10

• 2