Answer:
All matter is made up of very small particles.
There is space between particles.
All particles in a pure substance are the same.
The particles in matter are always in motion.
Particles are attracted to each other.
Explanation:
hope it helps
Answer:
I hope this what you had meant ️️
Explanation:
- the surface area of the solute
- the temperature of the solvent, and
- the amount of agitation that occurs when the solute and the solvent are mixed.
Answer:
a would be the correct answer
Answer:
( B) They all have their valence electrons in the same type of subshell.
Explanation:
With each period, a new shell is added to the atom.
Further, the groups are classified based on the type of subshell the last electron enters and number of valence electrons.
For all elements of same group, the last electron enters the same type of subshell.
Say, for group 1, last electron enters s orbital and they have 1 valence elctron.
for group 17, last electron enters p orbital and they have 7 valence electrons.
(A) and (D) are wrong because, energy level of the valence electrons is determined by the principle quantum number n and l and not by the type of subshell(only l) they enter.
(C) if the valence electron enters p orbital, then the elements will be placed in the p- block.
Answer:
C
Explanation:
Think about it. If you accelerate, you go faster. This means you change speed.
