It's like saying that if 1 meter is equal to 100 cm,

or

You can base the answers from the chart
Oh this is extremely hard...i might just die lol jk its the last one measuring cylinder :)
Answer:
It's a physical property because color is chemically not significant.
But occurance of a flame is chemical property because combustion takes place
Answer:
0.15M
Explanation:
NaOH + HCl -->NaCl + H2O
moles of NaOH reacted with HCl
(0.5 × 30)/1000 = 1.5 × 10^ -3
so the moles of HCl reacted with NaOH
1.5 × 10^ -3
concentration of HCl = ( 1.5 × 10^ -3)/10 ×1000
Copper, because it is the only metal out of all of them. Therefore copper is the only element that can loose electrons to have a positive charge, it is the most likely to become a cation.
I have not learnt this in school yet, but I researched it, and this is what all the websites say.
Hope this helps!