QUESTION IMAGE
Question
- for each substance listed in the table below identify if the molecule is an element or compound. then, provide evidence for your answer.
molecule | name | element or compound? | provide evidence for your answer
cl₂ | chlorine gas | |
h₂o | water | |
fl₂ | fluorine gas | |
hcl | hydrochloric acid | |
c₆h₁₂o₆ | glucose | |
co | carbon monoxide | |
To solve this, we recall: An element is a pure substance made of only one type of atom. A compound is a pure substance made of two or more different types of atoms (elements) chemically bonded.
1. $\boldsymbol{\ce{Cl2}}$ (Chlorine gas)
- Element or Compound? Element
- Evidence: The formula has only one type of atom (chlorine, $\ce{Cl}$). It is a diatomic molecule of the element chlorine.
2. $\boldsymbol{\ce{H2O}}$ (Water)
- Element or Compound? Compound
- Evidence: The formula has two different types of atoms: hydrogen ($\ce{H}$) and oxygen ($\ce{O}$), bonded together.
3. $\boldsymbol{\ce{F2}}$ (Fluorine gas)
- Element or Compound? Element
- Evidence: The formula has only one type of atom (fluorine, $\ce{F}$). It is a diatomic molecule of the element fluorine.
4. $\boldsymbol{\ce{HCl}}$ (Hydrochloric Acid)
- Element or Compound? Compound
- Evidence: The formula has two different types of atoms: hydrogen ($\ce{H}$) and chlorine ($\ce{Cl}$), bonded together.
5. $\boldsymbol{\ce{C6H12O6}}$ (Glucose)
- Element or Compound? Compound
- Evidence: The formula has three different types of atoms: carbon ($\ce{C}$), hydrogen ($\ce{H}$), and oxygen ($\ce{O}$), bonded together.
6. $\boldsymbol{\ce{CO}}$ (Carbon Monoxide)
- Element or Compound? Compound
- Evidence: The formula has two different types of atoms: carbon ($\ce{C}$) and oxygen ($\ce{O}$), bonded together.
We can summarize in a table:
| Molecule | Name | Element or Compound? | Evidence |
|---|---|---|---|
| $\ce{H2O}$ | Water | Compound | Contains hydrogen ($\ce{H}$) and oxygen ($\ce{O}$) atoms. |
| $\ce{F2}$ | Fluorine gas | Element | Contains only fluorine ($\ce{F}$) atoms. |
| $\ce{HCl}$ | Hydrochloric Acid | Compound | Contains hydrogen ($\ce{H}$) and chlorine ($\ce{Cl}$) atoms. |
| $\ce{C6H12O6}$ | Glucose | Compound | Contains carbon ($\ce{C}$), hydrogen ($\ce{H}$), and oxygen ($\ce{O}$) atoms. |
| $\ce{CO}$ | Carbon Monoxide | Compound | Contains carbon ($\ce{C}$) and oxygen ($\ce{O}$) atoms. |
(If you need individual answers for each row, use the above breakdown.)
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To solve this, we recall: An element is a pure substance made of only one type of atom. A compound is a pure substance made of two or more different types of atoms (elements) chemically bonded.
1. $\boldsymbol{\ce{Cl2}}$ (Chlorine gas)
- Element or Compound? Element
- Evidence: The formula has only one type of atom (chlorine, $\ce{Cl}$). It is a diatomic molecule of the element chlorine.
2. $\boldsymbol{\ce{H2O}}$ (Water)
- Element or Compound? Compound
- Evidence: The formula has two different types of atoms: hydrogen ($\ce{H}$) and oxygen ($\ce{O}$), bonded together.
3. $\boldsymbol{\ce{F2}}$ (Fluorine gas)
- Element or Compound? Element
- Evidence: The formula has only one type of atom (fluorine, $\ce{F}$). It is a diatomic molecule of the element fluorine.
4. $\boldsymbol{\ce{HCl}}$ (Hydrochloric Acid)
- Element or Compound? Compound
- Evidence: The formula has two different types of atoms: hydrogen ($\ce{H}$) and chlorine ($\ce{Cl}$), bonded together.
5. $\boldsymbol{\ce{C6H12O6}}$ (Glucose)
- Element or Compound? Compound
- Evidence: The formula has three different types of atoms: carbon ($\ce{C}$), hydrogen ($\ce{H}$), and oxygen ($\ce{O}$), bonded together.
6. $\boldsymbol{\ce{CO}}$ (Carbon Monoxide)
- Element or Compound? Compound
- Evidence: The formula has two different types of atoms: carbon ($\ce{C}$) and oxygen ($\ce{O}$), bonded together.
We can summarize in a table:
| Molecule | Name | Element or Compound? | Evidence |
|---|---|---|---|
| $\ce{H2O}$ | Water | Compound | Contains hydrogen ($\ce{H}$) and oxygen ($\ce{O}$) atoms. |
| $\ce{F2}$ | Fluorine gas | Element | Contains only fluorine ($\ce{F}$) atoms. |
| $\ce{HCl}$ | Hydrochloric Acid | Compound | Contains hydrogen ($\ce{H}$) and chlorine ($\ce{Cl}$) atoms. |
| $\ce{C6H12O6}$ | Glucose | Compound | Contains carbon ($\ce{C}$), hydrogen ($\ce{H}$), and oxygen ($\ce{O}$) atoms. |
| $\ce{CO}$ | Carbon Monoxide | Compound | Contains carbon ($\ce{C}$) and oxygen ($\ce{O}$) atoms. |
(If you need individual answers for each row, use the above breakdown.)