Answer:
Iffdldzdosodolzf cvbvxhmnvhihsoszüf
Pacticles of gas are more compact, but still have the ability to move.
Answer:
B. materials change their properties.
Explanation:
In a chemical change, materials often change their properties because a re-arrangement of atoms takes place.
A chemical change is one in which new kind of matter is formed.
It is always accompanied by energy changes.
- Chemical changes are not reversible.
- They lead to the production of new kinds of matter
- It involves mass changes
- Requires considerable amount of energy
Each year over 100,000 new organic compounds are produce
Answer:
B
Explanation:
This is because the periodic table is designed this way.
