EASY
Upper Secondary: IGCSE
IMPORTANT
Earn 100

The element krypton Kr, is in group 0, period 4. Its proton number is 36. What can you say about the reactivity of krypton?

Important Questions on Atoms and Elements

MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 3 - Atoms and Elements>Q>Q 1
Without looking at the periodic table, see if you can quickly list 30 elements, and give their symbols. Then underline the metals.
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 3 - Atoms and Elements>Q>Q 2
Explain the term conductor.
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 3 - Atoms and Elements>Q>Q 2
Explain the term ductile.
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 3 - Atoms and Elements>Q>Q 2
Explain the term malleable.
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 3 - Atoms and Elements>Q>Q 2
Explain the term brittle.
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 3 - Atoms and Elements>Q>Q 2
Explain the term sonorous.
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 3 - Atoms and Elements>Q>Q 2
Explain the term density.
EASY
Upper Secondary: IGCSE
IMPORTANT
Complete Chemistry for Cambridge IGCSE® Second Edition>Chapter 3 - Atoms and Elements>Q>Q 3
Aluminium is used for outdoor electricity cables. See if you can suggest three reasons why.