0.000 s
Revise smart, understand Better
Select Lessons (10)
ENERGY: Action of electricity on materials
ENERGY: Action of heat on materials
MATTER - PROPERTIES AND TRANSFORMATION: Chemical Reactions And Equations
MATTER - PROPERTIES AND TRANSFORMATION: Chemical Symbols, Formulae And Valency
MATTER - PROPERTIES AND TRANSFORMATION: Effect Of Heat On Substances
MATTER - PROPERTIES AND TRANSFORMATION: Introduction To Chemistry - Symbols
MATTER - PROPERTIES AND TRANSFORMATION: Mixtures And Pure Substances
MATTER - PROPERTIES AND TRANSFORMATION: Periodic table - Families of elements and Relative reactivity
MATTER - PROPERTIES AND TRANSFORMATION: Reaction With Oxygen of air
MATTER - PROPERTIES AND TRANSFORMATION: The Atom And Sub-Atomic Particles
5/63 MCQs for:
MATTER - PROPERTIES AND TRANSFORMATION: Reaction With Oxygen of air
Which gas is responsible for the 'pop' sound when a burning splint is introduced into it?
Carbon dioxide.
Oxygen.
Hydrogen.
Nitrogen.
What is the main product formed when iron (Fe) burns in air (e.g., as steel wool)?
Iron(II,III) oxide (magnetite).
Iron(II) oxide.
Iron carbonate.
Iron(III) oxide.
What happens to the volume of air in a sealed container after a substance (like phosphorus or iron) has burned and consumed the oxygen?
It increases.
It decreases.
It remains the same.
It fluctuates randomly.
What forms a black solid when heated in air?
Iron.
Hydrogen.
Calcium.
Copper.
What method is used to separate the components of liquid air?
Evaporation.
Decantation.
Fractional distillation.
Filtration.
