Exploring Elements, Isotopes, and Relative Atomic Mass

What particles make up the nucleus of an atom?

• Protons and neutrons

• Protons and electrons

• Neutrons and electrons

• Electrons only

Which element has atoms with just one proton in their nucleus?

• Helium

• Hydrogen

• Carbon

• Lithium

What does the atomic number of an element represent?

• Number of protons

• Number of electrons

• Number of isotopes

• Number of neutrons

Which element has an atomic number of 6?

• Sodium

• Lithium

• Carbon

• Helium

What does the symbol 'Fe' stand for?

• Fermium

• Iron

• Francium

• Fluorine

What are isotopes?

• Same element with different number of protons

• Different elements with the same number of protons

• Different elements with the same number of neutrons

• Same element with different number of neutrons

How many neutrons does carbon-13 have?

• 6

• 13

• 7

• 12

Why do isotopes of the same element react similarly?

• They have the same number of neutrons

• They have the same number of electrons

• They have the same number of protons

• They have the same mass number

What is the relative atomic mass of copper to one decimal place?

• 64.6

• 62.6

• 65.6

• 63.6

What does the symbol 'Ar' represent in chemistry?

• Argon

• Relative atomic mass

• Atomic number

• Atomic radius