QuestionClassify these substances as elements or compounds: 1. silicon (Si), 2. oxygen ( $\mathrm{O}_{2}$ ), 3. hydrogen peroxide ( $\mathrm{H}_{2} \mathrm{O}_{2}$ ), 4. rust ( $\mathrm{Fe}_{2} \mathrm{O}_{3}$ ), 5. methane ( $\mathrm{CH}_{4}$ ).

Studdy Solution

STEP 1

Assumptions1. The substances are pure, meaning they consist of only one type of particle. . An element is a substance that cannot be broken down into simpler substances by chemical means.
3. A compound is a substance formed when two or more chemical elements are chemically bonded together.

STEP 2

We will classify each substance based on the definitions of element and compound.

STEP 3

The first substance is a pure silicon (Si) chip. Silicon is a chemical element, so it is classified as an element.
$\text{Silicon (Si)} = \text{Element}$

STEP 4

The second substance is oxygen $\left(\mathrm{}_{2}\right)$ . Oxygen is a chemical element, but in this case, it is in the form of a molecule consisting of two oxygen atoms. However, as all the atoms are of the same type, it is still classified as an element.
$\text{xygen} \left(\mathrm{}_{2}\right) = \text{Element}$

STEP 5

The third substance is hydrogen peroxide $\left(\mathrm{H}_{2} \mathrm{}_{2}\right)$ . This is a compound of hydrogen and oxygen.
$\text{Hydrogen peroxide} \left(\mathrm{H}_{2} \mathrm{}_{2}\right) = \text{Compound}$

STEP 6

The fourth substance is rust $\left(\mathrm{}_{\mathrm{e}_{2}} \mathrm{}_{3}\right)$ . This is a compound of iron and oxygen.
$\text{Rust} \left(\mathrm{}_{\mathrm{e}_{2}} \mathrm{}_{3}\right) = \text{Compound}$

STEP 7

The fifth substance is methane $\left(\mathrm{CH}_{4}\right)$ in natural gas. This is a compound of carbon and hydrogen.
$\text{Methane} \left(\mathrm{CH}_{4}\right) = \text{Compound}$ The classification is as follows1. Silicon (Si) - Element2. Oxygen ( $\mathrm{}_{2}$ ) - Element3. Hydrogen peroxide ( $\mathrm{H}_{2} \mathrm{}_{2}$ ) - Compound4. Rust ( $\mathrm{}_{\mathrm{e}_{2}} \mathrm{}_{3}$ ) - Compound5. Methane ( $\mathrm{CH}_{4}$ ) - Compound

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QuestionClassify these substances as elements or compounds: 1. silicon (Si), 2. oxygen ( $\mathrm{O}_{2}$ ), 3. hydrogen peroxide ( $\mathrm{H}_{2} \mathrm{O}_{2}$ ), 4. rust ( $\mathrm{Fe}_{2} \mathrm{O}_{3}$ ), 5. methane ( $\mathrm{CH}_{4}$ ).

Studdy Solution

STEP 1

Assumptions1. The substances are pure, meaning they consist of only one type of particle. . An element is a substance that cannot be broken down into simpler substances by chemical means.
3. A compound is a substance formed when two or more chemical elements are chemically bonded together.

STEP 2

We will classify each substance based on the definitions of element and compound.

STEP 3

The first substance is a pure silicon (Si) chip. Silicon is a chemical element, so it is classified as an element.
$\text{Silicon (Si)} = \text{Element}$

STEP 4

STEP 5

The third substance is hydrogen peroxide $\left(\mathrm{H}_{2} \mathrm{}_{2}\right)$ . This is a compound of hydrogen and oxygen.
$\text{Hydrogen peroxide} \left(\mathrm{H}_{2} \mathrm{}_{2}\right) = \text{Compound}$

STEP 6

The fourth substance is rust $\left(\mathrm{}_{\mathrm{e}_{2}} \mathrm{}_{3}\right)$ . This is a compound of iron and oxygen.
$\text{Rust} \left(\mathrm{}_{\mathrm{e}_{2}} \mathrm{}_{3}\right) = \text{Compound}$

STEP 7

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QuestionClassify these substances as elements or compounds: 1. silicon (Si), 2. oxygen (O2\mathrm{O}_{2}O2​), 3. hydrogen peroxide (H2O2\mathrm{H}_{2} \mathrm{O}_{2}H2​O2​), 4. rust (Fe2O3\mathrm{Fe}_{2} \mathrm{O}_{3}Fe2​O3​), 5. methane (CH4\mathrm{CH}_{4}CH4​).

Studdy Solution

STEP 1

Assumptions1. The substances are pure, meaning they consist of only one type of particle. . An element is a substance that cannot be broken down into simpler substances by chemical means.3. A compound is a substance formed when two or more chemical elements are chemically bonded together.

STEP 2

We will classify each substance based on the definitions of element and compound.

STEP 3

The first substance is a pure silicon (Si) chip. Silicon is a chemical element, so it is classified as an element.Silicon (Si)=Element\text{Silicon (Si)} = \text{Element}Silicon (Si)=Element

STEP 4

STEP 5

The third substance is hydrogen peroxide (H22)\left(\mathrm{H}_{2} \mathrm{}_{2}\right)(H2​2​). This is a compound of hydrogen and oxygen.Hydrogen peroxide(H22)=Compound\text{Hydrogen peroxide} \left(\mathrm{H}_{2} \mathrm{}_{2}\right) = \text{Compound}Hydrogen peroxide(H2​2​)=Compound

STEP 6

The fourth substance is rust (e23)\left(\mathrm{}_{\mathrm{e}_{2}} \mathrm{}_{3}\right)(e2​​3​). This is a compound of iron and oxygen.Rust(e23)=Compound\text{Rust} \left(\mathrm{}_{\mathrm{e}_{2}} \mathrm{}_{3}\right) = \text{Compound}Rust(e2​​3​)=Compound

STEP 7

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QuestionClassify these substances as elements or compounds: 1. silicon (Si), 2. oxygen ( $\mathrm{O}_{2}$ ), 3. hydrogen peroxide ( $\mathrm{H}_{2} \mathrm{O}_{2}$ ), 4. rust ( $\mathrm{Fe}_{2} \mathrm{O}_{3}$ ), 5. methane ( $\mathrm{CH}_{4}$ ).

Assumptions1. The substances are pure, meaning they consist of only one type of particle. . An element is a substance that cannot be broken down into simpler substances by chemical means.
3. A compound is a substance formed when two or more chemical elements are chemically bonded together.

The first substance is a pure silicon (Si) chip. Silicon is a chemical element, so it is classified as an element.
$\text{Silicon (Si)} = \text{Element}$

The third substance is hydrogen peroxide $\left(\mathrm{H}_{2} \mathrm{}_{2}\right)$ . This is a compound of hydrogen and oxygen.
$\text{Hydrogen peroxide} \left(\mathrm{H}_{2} \mathrm{}_{2}\right) = \text{Compound}$

The fourth substance is rust $\left(\mathrm{}_{\mathrm{e}_{2}} \mathrm{}_{3}\right)$ . This is a compound of iron and oxygen.
$\text{Rust} \left(\mathrm{}_{\mathrm{e}_{2}} \mathrm{}_{3}\right) = \text{Compound}$