ELEMENTS: RECOGNISING CHEMICAL REACTIONS Flashcards
1
Q
What happens when you mix copper carbonate with sulphuric acid in a beaker?
A
The substance effervesces almost immediately and turns to a light blue. This shows that a chemical reaction has taken place.
2
Q
What happens to the temperature of hydrochloric acid when sodium hydroxide is added? - 2
A
- Temperature rises showing a chemical reaction has taken place
- Heat energy is given off
3
Q
What happened when ammonium carbonate is added to ethanoic acid?
A
- Effervesces vigorously
2. There is a drop in temperature as heat energy is given out
4
Q
What are the chemicals you use in an experiment called?
A
Reactants
5
Q
What are the chemicals you make as a result of your experiment?
A
Products
6
Q
If a chemical reaction gives out heat energy, what sort of reaction is this?
A
EXOTHERMIC
7
Q
If a chemical reaction causes a lot of fizzing, what is this called
A
EFFERVESCENCE
