Chapter 3.3 First Quizizz

……… is the number of protons in an atom

• Atomic number

• Mass number

• Isotopes

Mass number is the number of ……..

• Electrons plus neutrons plus protons

• Protons plus neutrons

• (Protons and neutrons ) minus protons

• Electrons plus protons

Isotopes are atoms with different ……

• Protons

• Electrons

• Neutrons

Isotopes have the same ……….. but different ………

Choose in the correct order.

• Mass number, atomic number

• Atomic number, mass number

……… is a characteristic number for all atoms of the same element

• Atomic number

• Mass number

• Both atomic and mass numbers

What is the protons number of an element with mass. Number = 15, atomic number = 6?

• 6

• 13

• 15

• 10

What is the neutrons number of an element with mass number = 24. And atomic number = 13?

• 13

• 24

• 11

• 37

What is the number of electrons of an element with atomic number = 30, mass number of 50?

• 20

• 40

• 50

• 30

Protium, Deuterium, tritium are isotopes of. ………..

• Carbon

• Oxygen

• Hydrogen

• Nitrogen

Oxygen is written as O-16.

Number 16 represents ……

• Atomic number

• Mass number