The vertical columns are groups
The horizontal rows are periods
I believe its n= m/M
n - number of moles
m - mass of substance
M - molar mass of substance
<span>Water:
*can dissolve most substances
* contains dissolved minerals
*expands when it freezes</span>
Answer:
a. release of heat flames or light - Physical Change
b. formation of precipitate - Chemical Change
c. change in substances size - Physical Change
d. change in an objects shape - Physical Change
e. change in an objects phase of matter - Physical Change
f. releasing gases/bubbles - Chemical Change
Explanation:
These are all either changes in physicality or in chemical structures; hope I helped either way!
Answer:
oxygen i think so......
Explanation:
i did the same question on my test
