Are the following scenarios physical or chemical changes? Grape juice turns to wine
Wood burns to ashes
Steam condenses on the lid of a pot
A broken leg mends itself
Gasoline burns in an engine
An infant gains 10 lbs
A rock is crushed to powder
Red and green marbles are mixed together in a bag
Lava cools to form rock
Corn kernels are turned into popcorn
Describe the difference between
A mixture and a compound
Pure and impure substances
Homogeneous and heterogeneous mixtures
How many types of atoms can you expect to find in an elemental substance?
Use the periodic table to answer the following:
What element is in the 2nd group and 4th period?
What element is in the 17th group and 5th period?
Where are metals found on the periodic table?
What are their characteristics?
Where are nonmetals found on the periodic table?
What are their characteristics?
What family does the element Cl belong to?

the movement of aircraft through clouds can even cause lightning strikes. a single lightning event is a "flash", which is a complex, multi-stage explosively ejected.

explanation:

and the person below goggled it.

mark as brainliest

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).