chemical reactions by blythe Flashcards
what is a chemical reaction
it is when 2 or more elements join to make new products
Atoms are rearranged in a chemical reaction. The substances that
react together are called the reactants
are formed in the reaction are called the products
what is a atom
the smallest particle of a chemical element that can exist
are atoms created or destroyed in a reaction
No atoms are created or destroyed in a chemical reaction
When methane burns in oxygen, carbon dioxide and water are made. Which is a reactant?
oxygen
Copper oxide and carbon dioxide are made when copper carbonate is heated strongly. Which is a product
Copper oxide
What name is given to the force that holds atoms together in a compound?
Chemical bond
What is another name for combustion?
Burning
Combustion reactions always release energy. What word can be used to describe them
Exothermic
Which of these is found in the fire triangle and is therefore essential for combustion
Oxygen
What is a hydrocarbon
A compound made from carbon and hydrogen only
What is produced when a hydrocarbon fuel burns in a very good supply of oxygen?
A catalyst speeds up a reaction
Which type of combustion releases the most energy
Complete combustion
What is produced when a hydrocarbon fuel burns in a very good supply of oxygen?
Carbon dioxide and water
what is made from atoms
everything even us
