How does a balanced chemical equation demonstrate the Law of Conservation of Mass?

Question

(1 point)
• it shows that the properties of the elements stay the same after the reaction © it shows that no atoms have been gained or lost during the reaction
O it shows that all compounds remain bonded after the reaction
O it shows that only physical changes follow the Law of Conservation of Mass

Answer 1

• it shows that no atoms have been gained or lost during the reaction

Answer 2

Which procedure could be used to demonstrate that matter is conserved during a physical change? (1 point)
o Find the mass of an apple. Cut the apple and remove the core. Find the mass
of the remaining apple.
o Find the mass of a cup of water. Boil the water. Find the mass of the water
that remains.
© Find the mass of a piece of ice. Let the ice melt. Find the mass of the liquid
• Find the mass of a raw egg. Cook the egg. Find the mass of the cooked egg.

Answer 3

o Find the mass of an apple. Cut the apple and remove the core. Find the mass
of the remaining apple.

Answer 4

One molecule of bromine (Br) and two molecules of potassium chloride (KCI) combine in a reaction. How many atoms are in the products? (1 point)
O six
O four
O three
• two

Answer 5

• two

Answer 6

One molecule of bromine (Br) and two molecules of potassium chloride (KCI) combine in a reaction. How many atoms are in the products? (1 point)
O six
O four
O three
O two

Answer 7

O six