Chemistery

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Els estats de la matèria

von Carles Sarroca

Molecules and Ions

von justin soh

welcome to chemistry

von Husein Hafsah Bint

Chemistry Chemistry is ultimately the study of matter including how it behaves and . Additionally in this unit we talked about how to describe properties and changes using diagrams and nomenclature, and equations.

von Ragubavan Sathurtheha

Chemistery

The atom

Atomic number: the number of protons in the nucleus is called the atomic number.

Electrons: Located outside the nucleus.

Protons: protons are located inside the nucleus.

Ionic charges and chemical families

Balancing chemical equations

step 6: Recount evrything.

step 5: Balance O or H- whichever os left over.

step 4: Balance H or O- whichever does not appear as diatomic comound.

step 3: balance all ions that are not H or O.

step 2: Balance any polyatomic ions.

step 1: make a table to show what is present in your equation as given.

counting atoms in molecules