GCSE Chemistry - Elements, Isotopes & Relative Atomic Mass #2

What is the smallest element?

• Oxygen

• Hydrogen

• Helium

• Carbon

What does the atomic number represent?

• Number of electrons

• Number of protons

• Number of neutrons

• Number of isotopes

What is the nuclear symbol for lithium?

• L

• Li

• Lh

• Lt

What are isotopes?

• Different forms of the same element with different number of protons

• Different forms of the same element with different number of neutrons

• Different forms of the same element with different number of electrons

• Different forms of the same element with different number of protons and neutrons

What is the mass number of carbon-13?

• 15

• 14

• 13

• 12

What is the relative atomic mass of copper?

• 63.6

• 65.2

• 61.3

• 67.8

What is the number of protons in a carbon atom?

• 6

• 8

• 7

• 5

What is the number of neutrons in a carbon-12 atom?

• 7

• 8

• 6

• 5

What is the symbol for sodium?

• No

• Sa

• So

• Na

What is the number of stable isotopes of copper?

• 4

• 1

• 2

• 3