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they are chemical elements

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Q: Hydrogen and chlorine are pure substances or chemical elements?
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Hydrogen and chlorine are pure substances of what?

Hydrogen and chlorine are chemical elements, not compounds


How many hydrogen atoms are in chlorine?

None: Hydrogen and chlorine are both chemical elements and therefore do not contain any other chemical substances.


Is chlorine a substances?

Chlorine is indeed a chemical substance, specifically one of the chemical elements.


What are the chemical elements in bagels?

These elements are carbon, hydrogen, oxygen and sometimes sodium&chlorine from salt.


What element does HCl not contain?

HCl is the chemical formula for hydrochloric acid. It contains the elements hydrogen and chlorine. Therefore, it does not contain any of the elements other than hydrogen and chlorine.


What are hydrogen chlorine and sodium examples of?

Hydrogen, chlorine, and sodium are examples of chemical elements.


Does hydrogen contain chlorine?

No. Both chlorine and hydrogen are elements. Elements cannot contain other elements.


Hydrogen oxygen and chlorine are?

Hydrogen, oxygen and chlorine are elements.


What element combines with chlorine?

Calcium, sodium and hydrogen to name a few.


How many elements does hcl?

2. Hydrogen and chlorine


What three chemicals are there in hydrochloric acid?

Hydrochloric acid itself is a chemical, i assume you mean elements, these would be Hydrogen and Chlorine. Also it is important to note there is water present which contains Hydrogen and Oxygen. So the three elements present in Hydrchloric acid would be Hydrogen, Chlorine and Oxygen.


How is hydogen chlorine different from hydrogen gas and chlorine gas?

Hydrogen chloride is a compound made from hydrogen and chlorine; the two are elements by themselves.