Writing Formula Equations

The chemical formula of Iron (III)bromide is

• FeBr

• Fe(III)Br

• FeBr₃

• Fe₂Br₃

Tags

NGSS.MS-PS1-1

How do the following two elements bond together?
K¹⁺  S^2- 

• KS

• K₈S

• K₆S₃

• K₂S

Tags

NGSS.MS-PS1-1

The red numbers in the image below represent ________

• subscripts

• coefficients

• I don't know, and don't want to try

• None of the answers are correct

When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced

• charge

• subscript

• random number

• coefficient

Tags

NGSS.MS-PS1-5

Balance this equation:
 2Li + Cl₂ -> LiCl

• 2Li + Cl₂ -> 4LiCl2

• 2Li + Cl₂ -> LiCl₂

• 2Li + Cl₂ -> 2LiCl

Tags

NGSS.MS-PS1-5

Which number should go in the blank?
_ H₂ + O₂ -> 2 H₂O

• 1

• 2

• 3

• 0

Tags

NGSS.MS-PS1-5

Balance this equation
_Zn+_HCl-->_ZnCl₂ +_H₂

• 1,1,2,1

• 1,1,1,2

• 1,2,1,1

• 2,1,1,1

Tags

NGSS.MS-PS1-5

Balance this equation.
_CH₄ + _O₂ --> _CO₂ + _H₂O

• 1,2,1,1

• 2,1,2,1

• 1,2,1,2

• 0,2,0,2

Tags

NGSS.MS-PS1-5

The substances at the beginning of a chemical equation are called the ____

• product

• yield

• chemical symbol

• reactants

What is the chemical formula for calcium phosphate?

Tags

NGSS.MS-PS1-1