Chemical Reactions Flashcards
(8 cards)
1
Q
What are the reactants in combustion
A
Fuel and oxygen
2
Q
In a chemical reaction what do we look for
A
Bubbling / fizzing
Temperature change
Colour change
Odour
Cloudiness
3
Q
In a physical reaction what do we look for
A
Colour change
Temperature change
Smell
Bubbles
4
Q
Meaning of rusting
A
Corrosion of iron
5
Q
What are the 3 things needed for combustion
A
Fuel oxygen and heat
6
Q
Word equation for fermentation
A
Glucose( in water)— ethanol + carbon dioxide
7
Q
Meaning Of respiration
A
A chemical reaction that occurs in every cell to supply our body with energy
8
Q
Examples of physical change
A
Do not make new substances
Often reversible
