Atomic Structure Flashcards
What is the aqueous solution?
The mixture made by adding a soluble substance to water
What is an atom?
The smallest part of an element that can still be recognised as that element.
What is the atomic number?
The number of protons (which equals the number of electron) in an atom. It is sometimes called the proton number.
What is a balanced symbol equation?
A symbol equation in which there are equal numbers of each type of atom on either side of the equation
What is biofuel?
Fuel made from animal or plant products
What is chromatography?
The process where by small amounts of dissolved substances are separated by running a solvent along a material such as absorbent paper
What is a compound?
A substance made when two or more elements are chemically bonded together
What is an electron?
A tiny particle with a negative charge. Electrons orbit the nucleus of atoms or ions in shells
Explain what an electronic structure is?
A set of numbers to show the arrangement of electrons in their shells (or energy levels)
What is an element?
A substance made up of only one type of atom. An element cannot be broken down chemically into any simpler substance.
What is a group?
All the elements in the columns (labelled 1 to 7 and 0) in the periodic table
Explain what an ion is.
A charged particle produced by the loss or gain of electrons
What is an isotope?
Atoms that have the same number of protons but different number of neutrons i.e they have the same atomic number but different mass numbers
What is the Law of Conservation of Mass?
The total mass of the products formed in a reaction is equal to the total mass of the reactants.
What is the mass number?
The number of protons plus neutrons in the nucleus of an atom.
