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who developed the Atomic Theory of Matter?

John Dalton developed the Atomic Theory of Matter.

what is the Atomic Theory of Matter?

The Atomic Theory of Matter states that all matter is made up of atoms, the atoms of any given element are identical, and compounds are formed by combining different atoms.

what does the law of definite proportions state?

John Dalton also stated the Law of Definite proportions which states that when two elements combine to form a series of compounds, the ratios of the masses of the second element that combine with 1g of the first element can always be reduced to small whole numbers.

what is Avogandro's Hypothesis

At the same temperature and pressure, equal volumes of different gases contain the same number of particles.

How many elements are naturally occurring?

There are 92 naturally occurring elements. The rest are man made.

what are Atoms

This are the smallest part of an element that maintains the chemical properties of that element.

what are nucleus

They contain the protons and neutrons.

what are Protons

They are the positive charged atoms that determines that atomic number.

what are neutrons

They contain no charge. They have the same size and mass as protons.

what are electrons

They are negatively charged atoms. They have the same size as protons or neutron.

what is Atomic number

This is the number of protons in an atom.

what is Mass number

This is the sum of neutrons and protons in an atom.

what are Isotopes

This are atoms with the same atomic number but have different number of neutrons.

what are chemical bonds

This are forces that hold atoms together

what are molecules

This is the smallest part of a compound.

what is molecular formular

This are symbols that represent the molecules in a compound.

what is structural formular

Uses lines to show bonds in a compound or molecule.

what are Ions

They are formed when electrons are lost or added to an atom.

what are Cations

They are formed when electrons are lost to form a positive charge.

what are anions

They are formed when electrons are gained to form a negative charge.