Atoms and Reactions Flashcards
Can atoms be created or destroyed?
NO NO NO NO NO
What is the CONSERVATION OF MATTER?
The mass of all the reactants at the start of the reaction is the same as the mass of all the products at the end of the reaction
What do chemical properties tell a scientist?
They describe how something behaves in a chemical reaction (e.g. how easy something burns)
In a chemical reaction, how do properties differ?
The chemical properties of the reactants are ALWAYS different to the products
What are some examples of physical properties?
Solubility, melting point, density, colour and magnetism
Define the word PRECIPITATE
An insoluble solid formed in a chemical reaction
What is a THERMAL DECOMPOSITION reaction?
It is a reaction where a chemical breaks down into more than one substance when heated
What is the word equation for a metal carbonate compound reaction?
Metal carbonate–> metal oxide + carbon dioxide
