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2. Which of the following can be classified as an element? A. Carbon Dioxide-CO2 B. Hydrochloric Acid- CHI C.Methane-CH4 D.Oxygen-O​

Sagot :

2. Which of the following can be classified as an element?

  • D. Oxygen

Amongst the following choices D. Oxgen is considered to be an element. Element in definition refers to a substance that only contains one single kind of atom. It is a pure substance that cannot be broken down into something simplier. On the other hand, choices A, B, and C are classified as compounds because it composed of two different kinds of elements.