Why do atoms have no overall charge?

Important Questions on Atoms and Elements

EASY

Upper Secondary: IGCSE

IMPORTANT

Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 3 - Atoms and Elements>Q>Q 5

What does the term proton number mean?

EASY

Upper Secondary: IGCSE

IMPORTANT

Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 3 - Atoms and Elements>Q>Q 5

What does the term nucleon number mean?

MEDIUM

Upper Secondary: IGCSE

IMPORTANT

Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 3 - Atoms and Elements>Q>Q 6

Name each of these atoms, and say how many protons, electrons and neutrons it has: ${}_6{}^{12}\mathrm{C} {}_8{}^{16}\mathrm{O} {}_{12}{}^{24}\mathrm{Mg} {}_{13}{}^{27}\mathrm{Al} {}_{29}{}^{69}\mathrm{Cu}$.

EASY

Upper Secondary: IGCSE

IMPORTANT

Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 3 - Atoms and Elements>Q>Q 1

What are isotopes?

EASY

Upper Secondary: IGCSE

IMPORTANT

Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 3 - Atoms and Elements>Q>Q 1

Name the three isotopes of carbon and write symbols for them.

EASY

Upper Secondary: IGCSE

IMPORTANT

Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 3 - Atoms and Elements>Q>Q 2

Carbon - $14$ is radioactive. What does this mean?

EASY

Upper Secondary: IGCSE

IMPORTANT

Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 3 - Atoms and Elements>Q>Q 3

What is a radioisotope? Give two examples.

EASY

Upper Secondary: IGCSE

IMPORTANT

Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 3 - Atoms and Elements>Q>Q 4

Radiation can kill us. Why?