Chemical Reactions Flashcards
Examples of chemical reactions
Vinegar+ bicarbonate
Burning/Combustion
Cooking
Elephant Toothpaste
What to look for if a chemical reaction has occurred
bubbles/fizzing/smell/gas,colour change,temperature change,light orsound
All chemical reactions need..
Energy to start
Chemical Change
Most of chemical reactions are irreversible and we always make new products.
Physical changes are…
Reversible and we don’t make something new
What is a product?
What we make
In this word equation what is reactant and what is the product:
Metal+Oxygen= Metal Oxide
Reactants: Metal and Oxygen
Product: Metal Oxide
Reactants
What you react together
What does a fire need to burn?
Fuel, Heat and oxygen(the fire triangle)
Types of fuels
Wood, oil,coal,gas.
Putting out fires
Remove any element from the fire triangle e.g.
Put CO2 on top to remove oxygen
Pour water to remove heat
Word equation for burning
Fuel+oxygen=CO2+water
What is a catalyst
A material that accelerates a chemical reaction
What is an exothermic reaction
Reaction that heats up
What is an endothermic reaction?
A reaction that cools down
