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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
5/65 MCQs for:
MATTER - PROPERTIES AND TRANSFORMATION: The Atom And Sub-Atomic Particles
Which of the following statements about electrons is correct?
They are found in the nucleus.
They have a positive charge.
They determine the atom's reactivity.
They are much heavier than protons.
According to Bohr's model, electrons orbit the nucleus in specific paths called:
Energy levels (or shells).
Clouds.
Spheres.
Nucleons.
Which of the following sub-atomic particle is neutrally charged?
Neutrons only.
Protons and neutrons.
Electrons only.
Protons only.
What is the maximum number of electrons that can be held in the third electron shell?
8.
18.
32.
2.
The number of shells in Bohr's model corresponds to the:
Number of neutrons.
Period number.
Group number.
Atomic mass.
