Atoms, Elements and Compounds Flashcards
What is meant by the ‘property’ of a material?
What the material looks like and how it behaves.
What are all materials made up of?
Atoms
What is an atom?
The smallest part of any material.
What is an element?
A substance made up of only one type of atom.
How many types of atoms are there?
92 different types
In what way are different types of atoms different?
They have different size and mass.
What is an element?
A substance made up of only one type of atom
What is the periodic table of elements?
A table that presents all the elements in an organised way
What is meant by the ‘element symbol’ or ‘chemical symbol’?
The one or two letter symbol for an element, found on the periodic table
What are the chemical symbols of carbon, oxygen, hydrogen, nitrogen, chlorine, iron?
Carbon = C Oxygen = O Hydrogen = H Nitrogen = N Chlorine = Cl Iron = Fe
What is a compound?
A substance that is made up of atoms of two or more elements
What does the ‘chemical formula’ of a substance show?
The number of atoms of each element in one unit of a compound
