C1 atomic structure Flashcards
(10 cards)
What is an atom?
A tiny particle that is the building block of everything. It’s the smallest particle of an element
What is an element?
A substance made up of a single type of atom
What is a compound?
A substance made from two or more different types of atom chemically bonded together
What is a mixture?
A substance made from 2 or more different elements or compounds not joined together so it can be separated
What is a subatomic particle?
Smaller than an atom. Used to describe the particles: protons, neutrons and electrons
What is the periodic table?
A list of all known elements ordered according to atomic number
What is a group?
A column of elements on the periodic table with similar properties
What is a halogen?
An element from group 7
What is an alkali metal?
An element from group 1. Called alkali metal because they produce an alkali when reacted with water
What is a noble gas?
an element from group 0. Called noble gases because they are all unreactive (intert)
