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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
A fuel that is formed from the anaerobic decomposition of dead organisms over geological timescales is a:
Fossil fuel.
Nuclear fuel.
Biomass fuel.
Hydro fuel.
The action of heat on substances leading to a change in their chemical composition is called:
Dissolution.
Thermal decomposition.
Melting.
Evaporation.
What is the balanced equation for the thermal decomposition of calcium carbonate?
Ca(s) + CO₂(g) → CaCO₃(s).
CaO(s) + CO₂(g) → CaCO₃(s).
Ca(s) + C(s)+O₂(g) → CaCO₃(s).
CaCO₃(s) → CaO(s) + CO₂(g).
The energy released from the nucleus of atoms, typically uranium, is known as:
Nuclear energy.
Geothermal energy.
Wind energy.
Solar energy.
The reaction CuSO₄(s)+5H₂O(l) → CuSO₄⋅5H₂O(s) is an example of:
Decomposition.
Dehydration.
Hydration.
Oxidation.
