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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
5/80 MCQs for:
MATTER - PROPERTIES AND TRANSFORMATION: Effect Of Heat On Substances
Which state of matter can be compressed?
Liquid.
Aqueous.
Solid.
Gas.
Which part of a burning candle represents a chemical change?
The wax melting.
The combustion of wax vapor to form carbon dioxide and water.
The wax solidifying.
The wax vaporizing.
When a gas is cooled and changes into a liquid, the particles:
Gain kinetic energy and move faster.
Remain unchanged in their motion.
Lose kinetic energy and move closer together.
Chemically react with each other.
Which of the following is an example of a non-permanent change?
Burning of paper.
Rusting of iron.
Baking a cake.
Dissolving sugar in water.
Consider an inflated balloon left in direct sunlight. It expands. This phenomenon can be explained by:
Increased collisions of gas particles with the balloon walls due to higher kinetic energy.
Water evaporating from the balloon surface.
The balloon material stretching due to chemical changes.
Chemical reaction inside the balloon.
