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mak6156
mak6156
03.10.2021 • 
Physics

HELP ASAPP!!! 4.) If you change the 2 in front of 2O2 to a 3, what will be the change in the results on the right side of the equation?
A.) There are now 3CO2 molecules
B.) Nothing changes in the equation
C.) There is an extra O2 molecule left over
D.) There are now 3H2O molecules

5.) Which procedure could be used to demonstrate that matter is conversed during a physical change?
A.) Find the mass of a cup of water. Boil the water. Find the mass of the water that remains.
B.)Find the mass of a raw egg. Cook the egg. Find the mass of the cooked egg.
C.) Find the mass of a piece of ice. Let the ice melt. Find the mass of the liquid water.
D.) Find the mass of an apple. Cut the apple and remove the core. Find the mass of the remaining apple.

6.) One molecule of bromine (Br2) and two molecules of potassium chloride (KCI) combine in a reaction. How many atoms are in the products?
A.) three
B.) six
C.) four
D.) two


HELP ASAPP!!! 4.) If you change the 2 in front of 2O2 to a 3, what will be the change in the resu

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