Test - Unit 2 Matter from Unit 3 S1 Flashcards
1
Q
A flask containing molecules of gas A and a separate flask containing molecules of gas B are both the same temperature. Gases A and B must have equal…
A
Average kinetic energies
2
Q
Which shows the Tyndall Effect?
A
Colloids
3
Q
Which term best describes when particles escape from the surface of a liquid and become gaseous?
A
Evaporation
4
Q
Label all 5 parts of the heating curve.
A
- Solid
- Melting
- Liquid
- Vaporization/Boiling
- Gas
5
Q
- Explain how salt dissolves in water.
A
When salt is mixed with water, the salt dissolves because the covalent bonds of water are stronger than the ionic bonds in the salt molecules. … Water molecules pull the sodium and chloride ions apart, breaking the ionic bond that held them together.
