Year 8 - Michaelmas Revision

Questão	Responda
What is an element?	Only one type of atom and it is listed on the Periodic Table
How many naturally occurring elements are there?	About 100 elements
Who was the first inventor of the Periodic Table?	Dmitri Mendeleev
When two elements join, the end is usually what?	____________ide.
What do we call more than one type of element joined together?	A compound
How many hands (combining power) does group 6 have on the Periodic Table?	2
What is the main way we classify elements?	Metal or Non-metal
How did Dmitri Mendeleev list the elements in his Periodic Table?	In order of their atomic weight
What are reactants and products in an equation?	Reactant= Chemicals you start of with Products= Chemicals you end up with
Where do you write other chemicals or special conditions in a equation?	Above the arrow
What happens to atoms in a reaction?	No atoms are made and no atoms are destroyed
How are balenced symbol equation more useful than a word equation? What do they tell us?	The quantities of the chemical
What do pure substances have?	A melting and boiling point
Why do mixtures have a range of melting and boiling points?	Because each substance in the mixture changes state at different temperatures

Resumo de Recurso

	Criado por Toby Adlam mais de 7 anos atrás