Science 14 - Chemistry Unit review 2026
questions and answers complete solution Graded
A+
element - Answer- Any pure (single) substance made up of atoms
compound - Answer- two or more elements combined together
Periodic Table - Answer- symbol for an element can be found here
, atom - Answer- smallest part of a chemical element
NaCl - Answer- Sodium Chloride is also known as table salt. It is a compound made up of 1
atom of sodium and 1 atom of chlorine.
H₂O - Answer- Water is a compound made up of two atoms of Hydrogen and 1 atom of
Oxygen
Na₂O - Answer- Sodium Oxide is a compound made up of 2 atoms of sodium and 1 atom of
Oxygen
matter - Answer- everything around us, it take up space and has mass
questions and answers complete solution Graded
A+
element - Answer- Any pure (single) substance made up of atoms
compound - Answer- two or more elements combined together
Periodic Table - Answer- symbol for an element can be found here
, atom - Answer- smallest part of a chemical element
NaCl - Answer- Sodium Chloride is also known as table salt. It is a compound made up of 1
atom of sodium and 1 atom of chlorine.
H₂O - Answer- Water is a compound made up of two atoms of Hydrogen and 1 atom of
Oxygen
Na₂O - Answer- Sodium Oxide is a compound made up of 2 atoms of sodium and 1 atom of
Oxygen
matter - Answer- everything around us, it take up space and has mass
