Naming and Writing Covalent Compounds

Yamilet and Charity are working on a chemistry project where they need to identify the chemical name for the compound with the formula Si2Br6. What is the chemical name for this compound?

• disilicon hexabromide

• silicon bromide

• disilicon tribromide

• silicon hexabromide

Answer explanation

The formula Si2Br6 indicates two silicon (Si) atoms and six bromine (Br) atoms. The correct IUPAC name is disilicon hexabromide, reflecting the number of each type of atom in the compound.

Tags

NGSS.MS-PS1-1

Lliana and Coral are working on a science project about different gases. They come across a compound with the formula NF3. What is the chemical name for this compound?

• nitrogen trifluoride

• nitrogen trichloride

• ammonia

• nitrogen dioxide

Answer explanation

The compound NF3 is named nitrogen trifluoride, as it consists of one nitrogen atom and three fluorine atoms. The other options do not match the formula or the correct naming conventions.

Tags

NGSS.MS-PS1-1

During a science experiment, Benjamin and Daniel were asked to identify the chemical name for the compound with the formula NH3. What is the chemical name for NH3?

• nitrogen trihydride (ammonia)

• nitrogen dioxide

• nitric acid

• nitrous oxide

Answer explanation

The compound with the formula NH3 is known as nitrogen trihydride, commonly referred to as ammonia. The other options do not correspond to this formula.

Tags

NGSS.MS-PS1-1

During a chemistry class, Leo, Josue and Aiden were discussing the chemical name for the compound with the formula PH3. What is the chemical name for this compound?

• phosphorus trihydride

• phosphine

• phosphorus hydride

• phosphorus trioxide

Answer explanation

The compound PH3 is commonly known as phosphorus trihydride. It is also referred to as phosphine, but the systematic name is phosphorus trihydride, which accurately reflects its chemical composition.

Maddy and Kimberly are working on a chemistry project. They need to find out the chemical formula for diboron tetrabromide to complete their experiment. What is the chemical formula for diboron tetrabromide?

• B2Br4

• BBr3

• B2Br2

• BBr4

Answer explanation

Diboron tetrabromide consists of two boron (B) atoms and four bromine (Br) atoms. The correct chemical formula is B2Br4, indicating the ratio of boron to bromine in the compound.

Tags

NGSS.MS-PS1-1

Brandon and Yamilet are working on a chemistry project. They need to find the chemical formula for silicon disulfide to complete their experiment. What is the chemical formula for silicon disulfide?

• SiS2

• SiO2

• Si2S

• Si2O3

Answer explanation

Silicon disulfide consists of one silicon (Si) atom and two sulfur (S) atoms, which is represented by the chemical formula SiS2. The other options do not correctly represent silicon disulfide.

Tags

NGSS.MS-PS1-1

Josue and Hailey are working on a chemistry project. They need to find the chemical formula for sulfur tetrachloride to complete their experiment. What is the chemical formula for sulfur tetrachloride?

• SCl4

• SCl2

• S2Cl4

• SCl6

Answer explanation

The chemical formula for sulfur tetrachloride is SCl4, indicating one sulfur atom bonded to four chlorine atoms. The other options do not correctly represent this compound.

Tags

NGSS.MS-PS1-1

• diphosphorus pentoxide

• phosphorus oxide

• phosphorus pentoxide

• diphosphorus trioxide

Tags

NGSS.MS-PS1-1

Which of the following is the correct chemical formula for dinitrogen tetroxide?

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NGSS.MS-PS1-1

• carbon dioxide

• carbon monoxide

• carbon trioxide

• carbon oxide

Tags

NGSS.MS-PS1-1