What is an atom?, An atom is a small particle that is the building block of any matter., An atom is a matter with composition that always stays the same., A compound is a, Symbol that is found on the periodic table of elements., Another type of substance that occurs when atoms of two or more different elements are bonded together., What does a proton do?, Charges : Positive (+1), Charges : Negative (-1), What is a chemical formula?, A chemical formula is a group of chemical symbols and numbers that represent the elements and the number of atoms of each element that make up a compound., A chemical formula is a subscript of two that indicates two atoms of oxygen., Which chemical formula is correct, H2O the 2 downwards, H20 the 2 in the middle, H2O the 2 upwards

Atoms & Elements

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