select all the correct answers.

which two molecules are compounds?

$\text{nahco}_3$

$\text{o}_3$

$\text{cl}_2$

$\text{c}_8\text{h}_{18}$

Question

select all the correct answers.

which two molecules are compounds?

$\text{nahco}_3$

$\text{o}_3$

$\text{cl}_2$

$\text{c}_8\text{h}_{18}$

Accepted Answer

{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "multiple_choice_formatter", "explain_then_answer", "tutor", "mastery_adaptive_brevity" ], "needs_drawing": false, "concepts_used": [ "Elements and Compounds", "Molecular Classification" ], "new_concepts": [], "current_concepts": [ "Elements and Compounds", "Molecular Classification" ] } ## Definir compuestos y elementos Using the *Elements and Compounds* and *Molecular Classification* knowledge points $$ \text{Compuesto} = \text{Sustancia formada por dos o más elementos químicos diferentes combinados químicamente.} $$ $$ \text{Elemento} = \text{Sustancia formada por un solo tipo de átomo.} $$ ## Analizar cada opción dada Using the *Elements and Compounds* and *Molecular Classification* knowledge points $$ \begin{aligned} &\text{1. } \mathrm{NaHCO_3} \implies \text{Contiene Na, H, C, O (4 elementos diferentes) } \therefore \text{Es un compuesto.} \ &\text{2. } \mathrm{O_3} \implies \text{Contiene solo oxígeno (1 elemento) } \therefore \text{Es un elemento molecular.} \ &\text{3. } \mathrm{Cl_2} \implies \text{Contiene solo cloro (1 elemento) } \dots \text{Es un elemento molecular.} \ &\text{4. } \mathrm{C_8H_{18}} \implies \text{Contiene C y H (2 elementos diferentes) } \therefore \text{Es un compuesto.} \end{aligned} $$

(A) $\text{NaHCO}_3$

(B) $\text{O}_3$

(C) $\text{Cl}_2$

(D) $\text{C}_8\text{H}_{18}$

{ "subject": "Natural Science", "question_type": "Multiple Choice", "knowledge_point": [ "Natural Science", "Chemistry", "Elements and Compounds" ] }

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QUESTION IMAGE

Question

Explanation:

Definir compuestos y elementos

Analizar cada opción dada

Answer: