Electrical Charge and Atomic Structure Quiz

What is the relative electrical charge of a proton?

• -1

• 0

• +1

• +2

Answer explanation

The relative electrical charge of a proton is +1, indicating a positive charge.

What is the relative electrical charge of a neutron?

• -1

• 0

• +1

• +2

Answer explanation

Neutrons have a relative electrical charge of 0, meaning they are electrically neutral.

What is the relative electrical charge of an electron?

• -1

• 0

• +1

• +2

Answer explanation

The relative electrical charge of an electron is -1, which means it carries a negative charge.

How does the number of protons in an element relate to its atomic number?

• It is equal to the atomic number.

• It is double the atomic number.

• It is half the atomic number.

• It is unrelated to the atomic number.

Answer explanation

The number of protons in an element is equal to its atomic number, making the correct answer choice 'It is equal to the atomic number.'

What is the radius of an atom compared to the radius of its nucleus?

• The radius of an atom is much larger than the radius of its nucleus.

• The radius of an atom is much smaller than the radius of its nucleus.

• The radius of an atom is equal to the radius of its nucleus.

• The radius of an atom is unrelated to the radius of its nucleus.

Answer explanation

The radius of an atom is much larger than the radius of its nucleus.

What is the relative mass of a proton?

• 1

• 0

• -1

• 2

Answer explanation

The relative mass of a proton is 1, which is the correct choice among the options provided.

What is the relative mass of a neutron?

• 1

• 0

• -1

• 2

Answer explanation

The relative mass of a neutron is 1, which is the correct choice among the given options.

What is the relative mass of an electron?

• nearly 0

• 0

• -1

• 1/1836

Answer explanation

The relative mass of an electron is nearly 0 compared to the mass of a proton. It is approximately 1/1836 times the mass of a proton.

What is the term used to describe atoms of the same element with different numbers of neutrons?

• Isotopes

• Ions

• Molecules

• Compounds

Answer explanation

Isotopes are atoms of the same element with different numbers of neutrons.

What is a mixture?

• A substance made of two or more elements chemically combined.

• A substance made of two or more elements physically combined.

• A substance made of a single element.

• A substance made of a single compound.

Answer explanation

A mixture is a substance made of two or more elements physically combined, not chemically combined. This distinguishes it from a compound where elements are chemically bonded.