4. Atoms and Elements

Which subatomic particle, when its number in the nucleus changes, changes an atom’s elemental identity?

Which element has an atomic number of $11$ (i.e., contains $11$ protons in its nucleus)?

Which subatomic particles in an atom carry a negative charge?

Which set correctly lists the three main subatomic particles that make up an atom?

In a neutral atom, which subatomic particle carries a negative charge?

Which subatomic particles in an atom carry a positive charge?

In a simplified model of the atom, which subatomic particle is typically considered the smallest?

In a simplified model of subatomic particles, what electric charge does a proton carry?

Which subatomic particle is the positively charged part of an atom?

How many protons are in a tungsten atom (W)?

Which element has 18 protons in its nucleus?

In a neutral atom, how do neutrons affect the atom’s overall electric charge?

In a typical atom, which subatomic particle has the least mass?

In a simplified atomic model, where is a neutron located in an atom?

In the simplified model of subatomic particles, what is the relative charge of a proton?