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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
5/50 MCQs for:
MATTER - PROPERTIES AND TRANSFORMATION: Mixtures And Pure Substances
Which of the following is a homogeneous mixture?
Oil and water.
Air.
Sand and iron filings.
Blood.
The process where a solid turns directly into a gas without passing through the liquid state is called:
Melting.
Sublimation.
Boiling.
Condensation.
When iodine is heated, it turns directly into a purple gas without melting. This is an example of:
Condensation.
Melting.
Sublimation.
Evaporation.
The process of turning a liquid into a solid is called:
Freezing.
Boiling.
Sublimation.
Melting.
To obtain pure salt from salt water, which separation technique would be most appropriate if you only care about the salt?
Filtration.
Decantation.
Simple distillation.
Evaporation.