Glossary Flashcards
What is the definition of an Element?
A pure substance composed of atoms that all have the same number of protons in the atomic nucleus
What is the definition of an Isotope?
One of two or more species of atoms of a chemical element with the same atomic number and position on the periodic table
What is the definition of a Solution?
A homogenous mixture of two or more substances
What is the definition of a Solvent?
A substance that dissolves other materials to form a solution
What is the definition of a Solute?
A substance that is dissolved in a solvent to form a solution
What is the definition of a Compound?
A substance of two or more elements chemically bonded in a fixed ratio
What is the definition of an Atom?
The basic building block of matter
What is the definition of a Molecule?
A group of two or more atoms held together by chemical bonds
What is the definition of a Mixture?
The result of combining two or more substances
What is the definition of Homogenous?
A substance that is consistent or uniform throughout its volume
What is the definition of Heterogeneous?
A substance that is not consistent throughout its volume
What is the definition of Suspension?
A dispersion of particles throughout a liquid with the particles being sufficiently large that they will settle out on standing
What is the definition of Chromatography
A laboratory technique for the seperation of a mixture into its components
What is the definition of a Centrifuge
A rapidly spinning machine that seperates mixtures using density
What is the definition of Miscible?
Liquids mix together
What is the definition of Immiscible?
Liquids do not mix together
What is the definition of Electrostatic?
The force of attraction or repulsion between two charged particles
What is the definition of Electronegativity?
The ability of an atom to attract electrons from surrounding atoms within the molecule
What is the definition of First Ionisation Energy?
The energy required to remove an outer electron from atoms in the gaseous state
What is the definition of Radioactivity?
A change in the number of particles found in the nucleus
