Answer: two
Explanation: toasting bread is a chemical change and so is mixing the lemonade powder into water. The rest of the changes are physical.
Answer:
ATP
Explanation:
(adenosine triphosphate) Its a chemical enegry teh cell uses.
Answer:
because, it resembles the properties of alkali earth metals as well as halogens ! OwO
Explanation:
" Hydrogen resembles the properties of alkali earth metals as well as halogens. Hydrogen has one electron in its valence shell and it also needs one more electron to get stable. ... For this the hydrogen is placed separately in periodic table ! "
P.s: sharky said thanks for the points !