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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:
ENERGY: Action of heat on materials
What is the chemical name for copper(II) sulfate pentahydrate?
Green vitriol.
Blue vitriol.
White vitriol.
Black vitriol.
The term 'hydrate' in chemistry refers to a compound that:
Contains hydrogen.
Contains water molecules incorporated into its crystal structure.
Is soluble in water.
Contains oxygen.
Why does the mass of calcium carbonate decrease upon strong heating?
A gaseous product escapes.
Oxygen from the air is absorbed.
Calcium is lost.
The solid melts.
What is the approximate general equation for the thermal decomposition of sugar (carbonization)?
C₁₂H₂₂O₁₁(s) –heat→ C₁₂(s) + H₂₂O₁₁(g).
C₁₂H₂₂O₁₁(s) –heat→ 12C(s) + 11H₂O(g).
C₁₂H₂₂O₁₁(s) --heat→ 12CO₂(g) + 11H₂(g).
C₁₂H₂₂O₁₁(s) –heat →CO(g) + H₂O(g).
In an experiment to study the action of heat on calcium carbonate, a decrease in mass indicates the loss of:
Carbon dioxide gas.
Water vapor.
Heat energy.
Calcium oxide.
