Earthquakes and volcanic eruption
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
Answer:
probs has to do with the size of the object
Explanation:
Answer:
You have a pressure change and temperature change - you can use the combined gas law:
P1V1/T1 = P2V2/T2
Where P1 = 1am
P2 = 0.8atm
T1 = 273K
T2 = 273 + 22 = 295K
V1 = 1.2lL
V2 = x
Explanation:
