Atoms, Elements, Isotopes

What is the charge of a proton?

• Neutral

• Variable

• Negative

• Positive

Answer explanation

A proton has a positive charge.

Which subatomic particle orbits the atomic nucleus?

• Photon

• Neutron

• Proton

• Electron

Answer explanation

The subatomic particle that orbits the atomic nucleus is the electron. It is negatively charged and plays a crucial role in chemical bonding and electricity.

What is the charge of an electron?

• 0

• 2

• 1

• -1

Answer explanation

The charge of an electron is -1, which is the correct choice.

What is the relationship between the number of protons and the atomic number of an element?

• They are completely unrelated

• They are the same

• The atomic number is always greater than the number of protons

• The atomic number is always less than the number of protons

Answer explanation

The atomic number of an element is equal to the number of protons in its nucleus.

What is the charge of a neutron?

• 0

• 2

• 1

• -1

How many electrons can the first orbital shell hold?

• 1

• 2

• 3

• 4

Answer explanation

The first orbital shell can only hold 2 electrons maximum. 1 electron for H and another 1 electron for He.

What is located in the nucleus of an atom?

• Protons + Neutrons

• Only Protons

• Only Neutrons

• Electrons

Answer explanation

The nucleus is the home for protons and neutrons.

Changing the proton changes the...

• 
• 
• ion

changing the electrons creates an...

• element

• ion

• isotope

isotopes essentially...

• change neutrons

• change protons

• change electrons