Year 10 Chemistry Guaranteed Success
Atomic Structure
An element is a pure substance composed of only one type of atom. A compound, on the other hand, is
made up of atoms from two or more different elements joined by chemical bonds.
Subatomic Particles
Protons, neutrons, and electrons are...
Year 10 Chemistry Guaranteed Success
Atomic Structure
An element is a pure substance composed of only one type of atom. A compound, on the other hand, is
made up of atoms from two or more different elements joined by chemical bonds.
Subatomic Particles
Protons, neutrons, and electrons are the three main subatomic particles. Protons have a positive charge
and are found in the nucleus, while neutrons have no charge and are also found in the nucleus.
Electrons have a negative charge and orbit around the nucleus.
The Periodic Table
The periodic table is a table that organizes elements based on their atomic number, symbol, and
average atomic mass. Elements with similar chemical properties are grouped together in the same
period or group.
Chemical Properties
A physical property is a characteristic that can be observed without changing the substance. Metals are
elements that are good conductors of heat and electric current, while non-metals tend to be poor
conductors.
Chemical Reactions
A chemical reaction is a process in which one or more substances are changed into others. Isotopes are
atoms of the same element with different numbers of neutrons.
Chemical Bonds
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