C. S2 Revision Chemical reactions Flashcards
What is an element?
A substance containing only 1 type of atom
What is a compound?
2 or more elements chemically combined
What is a reactant?
A substance that takes part in a chemical reaction
What is a product?
A substance produced in a chemical reaction
What does the prefix mono mean?
1
What does the prefix di mean?
2
What does the prefix tri mean?
3
What does the prefix tetra mean?
4
On which side of a chemical equation are reactants found?
The Left Hand Side (LHS)
On which side of a chemical equation are products found?
The Right Hand Side (RHS
What does the “+” sign mean on the LHS of an equation?
Reacts with
What does the arrow mean in a chemical equation?
“To produce”
What does the + sign on the RHS of a word equation mean?
And
What is ALWAYS produced in a chemical reaction?
A new substance
What are the 5 signs of a chemical reaction?
Gas given off
Colour change
Smell
Energy change (temperature, light)
Solid formed
How can we detect energy changes in a reaction?
Using a thermometer to detect change in temp
Feeling heat given off by a reaction
Hearing sound energy
Seeing Light energy
What separation technique do we if there is an insoluble substance in water?
Filtration
Name the part shown
Name the part shown
Filter paper
Name the part shown
Erlenmeyer (Conical ) Flask
Name the part shown
Filtrate
Name the part shown
Residue
What is an “ore”?
A naturally occurring metal compound
What is meant by “extraction”?
Obtaining a metal from its ore
What 3 methods are used to extract metels fom their ores?
- Heating
- Heating with Carbon
- Electrolysis
What is meant by “electrolysis”?
Breaking apart a compound using electricity
