Chemistry revision Flashcards
What are some properties of metals?
Good conductor of electricity, good conductor or heat, shiny, high density, ductile, malleable
What are some properties of non metals?
Poor conductor or electricity, poor conductor of heat, dull, low density, brittle
Do metals or non metals have high melting and boiling points?
Metals
Do metals or non metals have a low boiling and melting point?
Non metals
What do chemical reactions do?
Makes a new chemical
How can chemical equations be represented?
By using equations.
What is a catalyst?
A substance to speed up chemical reactions.
What is evidence of a chemical reaction?
Temperature change, bubbles or colour change.
What is made of elements?
Everything in the universe.
What is an element?
Made of only one type of atom.
What happens when you mix 2 pure substances?
It becomes a mixture.
What happens when 2 pure substances are heated together?
They join together by chemical bonds and can’t be separated.
What is a compound?
Contains different types of atoms chemically bonded.
What is a mixture?
Different elements and compounds together.
What is an element?
a pure sunstance and only made up of one type of atom
