8.5A Atomic Structure Subatomic Particles #1

These determine the reactivity of an element...

• Valence electrons

• Valence Protons

• Valence Neutrons

• Valence Quark

Which subatomic particle has a positive (+) charge?

• Neutron

• Proton

• Electron

Which subatomic particle has a negative (-) charge?

• Proton

• Electron

• Neutron

Which subatomic particle has a neutral or no charge?

• Proton

• Electron

• Neutron

Where is the nucleus located in an atom?

• Near the electron shells/levels

• Near the center of an atom

In this picture, the Electrons are found in which color?

• Blue

• Red

• Green

What is the mass number?

• the number of protons in the nucleus

• the number of protons and neutrons in the nucleus

• the number of neutrons in the nucleus

• the number of protons and electrons in the atom

In order for an atom to be neutral what has to be true?

• The atom has more protons than neutrons

• The atom has more neutrons than protons

• The atom has the same number of protons and neutrons

• The atom has the same number of protons and electrons

Which subatomic particles contribute the most to the mass of an atom?

• Protons, Neutrons, Electrons

• Protons only

• Protons and Electrons

• Protons and Neutrons

Where are protons located?

• in the nucleus

• near the nucleus

• orbiting the nucleus

• can't be determined