Selle The following table gives the boiling and melting points of
answer the questions that follow
Compound
M. P (°C)
B. P (°C)
- 23.0
76.8
NO-
801
1470
681
1320
1420
712
- 114
-85.4
5.5
80.5
a. Which compounds are likely to have giant structures in solid state?
b. Which compounds can conduct electric current in molten state but not in solid
state?
C.
Which compounds have simple molecular structures?
d. Which compound is a liquid at room temperature (25°C)?
6. The table below gives information about four substances. Use it to answer the questions
that follow
Substance
B. P
(°C)
(°C)
onict
Conductivity
Electricity in:
Solid
Molten
state
state
Does not
Conducts
el XY
800
ON X
1420
Conducts
Conducts
850
1490
Does not
Does not
1700
2200
Does not
Does not
113
440
3​

Is a measure of the resistance to flow. a high liquid has a high resistance to flow and flows slowly. the ancients thought everything in the world was made of 4 we now know that there are 94 naturally occurring and scientists have created another 24 i am certain they will create even more. honey flows slowly because it has a high to flowing. a can be separated by physical means because it contains more than one pure substance and 2 pure substances are not chemically bonded to each other. a cannot be separated by physical means. all matter is made up of all elements are with the same number of protons. if it is just a single or many bonded together, if all of them have the same number of protons, it is an element. in a piece of pure iron metal, all the are joined together, that piece of iron metal is called elemental iron. a single of iron is called elemental iron. a mixture has differences from place to place. we might need a microscope to see them or they might be obvious to the unaided eye. there are surfaces separating it into different phases. a mixture is the same everywhere. it is uniform. there are no surfaces separating it into different phases. if different kinds of atoms (different elements) are bonded together by their electrons, it is called a there are physical means of to isolate the different pure substances in a mixture and there are chemical means of to isolate the different elements in a compound. 1. element 2. compound 3. mixture 4. heterogeneous 5. homogeneous 6. pure substance 7. atoms 8. separation 9. viscosity 10. resistance