Physical Properties and Changes of Matter practice questions Flashcards
1
Q
Describe the difference in shape b/w liquid and gases
A
liquid: INdefinite shape
gas: NO definite shape
2
Q
To the nearest tenth, what is the density of a substance with a mass of 26.25 g and volume of 2.5 cm^3
A
- density = mass/volume
- 26.25/2.5 = 10.5
3
Q
What are the two types of vaporization?
A
- evaporation- occurs on surface of liquid as it changes into the gas phase
- boiling- ENTIRE liquid is heated to boiling point
4
Q
Plasmas are high temperature collections of ions and free electrons . T or F?
A
T.
5
Q
In what phase of matter do mlcs exert a strong attraction to one another as they move slowly relative to one another?
A
solid
6
Q
What phase of matter has mlcs that exert moderate attractions to one another as they move at moderate speeds?
A
liquids
7
Q
Which phase of matter has mlcs that exert little or no attraction to one another bc they move at high speeds?
A
gas
