Compounds (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Flashcards

A substance containing 2 or more elements chemically joined together

Compounds have different properties from the elements that compose them

$H_2O$

2 (Hydrogen and Oxygen)

3 (2 Hydrogen, 1 Oxygen)

$NaCl$

2 (Sodium and Chlorine)

2 (1 Sodium, 1 Chlorine)

$H_2SO_4$

3 (Hydrogen, Sulfur, Oxygen)

7 (2 Hydrogen, 1 Sulfur, 4 Oxygen)