Chemistry (Eval)

Chemistry

Branch of science which deals with the study of matter and the changes it undergoes

Matter

Anything that occupies space and has mass composed of tiny particles called atoms

Atom

fundamental building block of matter, indivisible and still behave as a chemical system; smallest particle that can retain an element’s chemical identity

Nucleus

the small dense core of an atom containing protons and neutrons

Protons

positively charged subatomic particles

Electrons

negatively charged subatomic particles that orbit the nucleus

Neutrons

electrically neutral subatomic particle

Isotopes

atoms of the same element with different numbers of neutrons; have the same atomic number but different mass numbers

Atomic Number

identifies the element; equal to the number of protons in a particular atom

Mass number

sum of the protons and neutrons in the atom

Stoichiometry

the calculation of relative quantities of reactants and products in chemical reactions.

Stoichiometry

Founded on the law of conservation of mass where the total mass of the reactants equals the total mass of products.

Stoichiometry

Relation among quantities of reactants and products typically form a ratio of positive integers