Compounds And Formulae key idea
Material
The substance or sample being studied.Property
In H₂O, H tells hydrogen, O tells oxygen, and the small 2 tells two hydrogen atoms.Evidence
The visible observation, label, or test result.Conclusion
The chemistry idea shown by the evidence.Labelled diagram
Compounds And Formulae explain card
A compound is formed when atoms of different elements join chemically. Its formula shows which elements are present and how many atoms of each are in one unit.Exam cue: Use a labelled observation before the explanation.
- 1Material -> Property: has
- 2Evidence -> Conclusion: supports