Fichas
7.1
Fichas del conjunto (13)
- 17 . 1Hi :)
- 2Physical ChangesThe changes where no new substances are formed.
- 3Chemical changesThe changes where new substances are formed.
- 4ExpansionWhen volume of an object increases and its density decreases.
- 5Contraction(The opposite of expansion)
When the volume of an object decreases. - 6EvaporationThe process of turning liquid into gas (vapour).
- 7MeltingThe process of turning solid into liquid.
- 8CondensationThe process of turning gas into liquid.
- 9Freezing (solidification)The process of turning liquid into solid
- 10PrecipitateAn event or situation that is undesirable.
- 11what is :- solute solvent solution?Solute : the solid that is been dissolved.
Solvent : the dissolving liquid.
Solution : the mixture that is formed. - 12CrystallisationIf the solvent is removed by evaporation, the solute particles can join together and form crystal.
This process is known as crystallisation. - 13How can you detect a chemical change?The presence of a new substance can be detected by:
1. seeing a new colour
2. smelling a gas or seeing bubbles
3. seeing a new solid forming in a clear solution
4. seeing or feeling a change in temperature.
Información
- Descripción
- physical and chemical changes.
- Creado por
- Sadia M
- Visitas
- 30
- Etiquetas
- Valoración