Which two subatomic particles are found in the NUCLEUS of at atom?

• protons & nuetrons
• protons & electrons
• neutrons & electrons
• electrons & protons

Tags

NGSS.MS-PS1-1

The subatomic particle with a neutral charge is:

• protons
• electrons
• neutrons
• cloud

If an atom has 24 protons and 24 electrons, what is the atomic number of this element?

• 24
• 48
• 0
• 42

Tags

NGSS.MS-PS1-1

How many protons does this element have?

• 40
• 21
• 20
• 41

Tags

NGSS.MS-PS1-1

Elements in the same ________ are more chemically similar.

• group or family

• period

• club

• table

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What does the 1 stand for?

• Hydrogen
• atomic number
• atomic mass
• atomic explosion

Tags

NGSS.MS-PS1-1

__________ are the smallest unit of an element that maintains the properties of the element.

• Particles

• Atoms

• Protons

Tags

NGSS.MS-PS1-1

Isotopes of an element have different number of ___________ and therefore have different masses.

• Protons

• Neutrons

• Electrons

Electrons in the outermost energy level are called?

• Valence Electrons

• Valence Protons

• Valence Neutrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many neutrons does Chlorine (Cl) with an atomic number of 17 and an atomic mass of 35 have?

• 17

• 18

• 19

Tags

NGSS.MS-PS1-1